《Dictionary of Engineering》McGraw-Hill，Dictionary of Engineering，Second Edition，2003.2ed.pdf_P16-P20

acme screw thread worker-days lost as a result of disabling injuries acfm See actual cubic feet per minute. per thousand worker-hours of exposure. { ak acid blowcase See blowcase. { asəd blo¯ka¯s } sədent səverəde¯ ra¯t } acid cleaning [ENG] The use of circulating acid accommodation [CONT SYS] Any alteration in a to remove dirt, scale, or other foreign matter robot’s motion in response to the robot’s envi- from the interior of a pipe. { asəd kle¯niŋ } ronment; it may be active or passive. { əka¨m acid conductor [CHEM ENG] A vessel designed əda¯shən } for refortification of hydrolyzed acid by heating accordion door [BUILD] A door that folds and and evaporation of water, or sometimes by disunfolds like an accordion when it is opened and tillation of water under partial vacuum. { as closed. { əko˙rde¯ən do˙r } əd kəndəktər } accordion partition [BUILD] A movable, fabric- acid egg See blowcase. { asəd eg } faced partition which is fitted into an overhead acid gases [CHEM ENG] The hydrogen sulfide track and folds like an accordion. { əko˙rde¯ən and carbon dioxide found in natural and refinery pərtishən } gases which, when combined with moisture, accordion roller conveyor [MECH ENG] A con- form corrosive acids; known as sour gases when veyor with a flexible latticed frame which permits hydrogen sulfide and mercaptans are present. variation in length. { əko˙rde¯ən ro¯ lər kən { asəd gasəz } va¯ər } aciding [ENG] A light etching of a building suraccretion [CIV ENG] Artificial buildup of land face of cast stone. { asədiŋ } due to the construction of a groin, breakwater, acid lining [ENG] In steel production, a silicadam, or beach fill. { əkre¯shən } brick lining used in furnaces. { asəd lı¯niŋ } accumulated discrepancy [ENG] The sum of acid number [ENG] A number derived from a the separate discrepancies which occur in the standard test indicating the acid or base compovarious steps of making a survey. { əkyu¨myə sition of lubricating oils; it in no way indicates la¯dəd dəskrepənse¯ } the corrosive attack of the used oil in service. accumulative timing [IND ENG] A time-study Also known as corrosion number. { asəd method that allows direct reading of the time ¦nəmbər } for each element of an operation by the use acid polishing [ENG] The use of acids to polish of two stopwatches which operate alternately. a glass surface. { asəd pa¨lishiŋ } { əkyu¨myəla¯div tı¯miŋ } acid process [CHEM ENG] In paper manufacaccumulator [CHEM ENG] An auxiliary ram ex- ture, a pulp digestion process that uses an acidic truder on blow-molding equipment used to store reagent, for example, a bisulfite solution conmelted material between deliveries. [ENG] taining free sulfur dioxide. { asəd pra¨səs } See air vessel. [MECH ENG] 1. A device, such acid recovery plant [CHEM ENG] In some refinas a bag containing pressurized gas, which acts eries, a facility for separating sludge acid into upon hydraulic fluid in a vessel, discharging it acid oil, tar, and weak sulfuric acid, with provirapidly to give high hydraulic power, after which sion for later reconcentration. { asəd rəkəv the fluid is returned to the vessel with the use əre¯ plant } of low hydraulic power. 2. A device connected acid sludge [CHEM ENG] The residue left after to a steam boiler to enable a uniform boiler treating petroleum oil with sulfuric acid for the output to meet an irregular steam demand. 3. removal of impurities. { asəd sləj } A chamber for storing low-side liquid refrigerant acid soot [ENG] Carbon particles that have in a refrigeration system. Also known as surge absorbed acid fumes as a by-product of combusdrum; surge header. { əkyu¨myəla¯dər } tion; hydrochloric acid absorbed on carbon paraccustomization [ENG] The process of learning ticulates is frequently the cause of metal corrothe techniques of living with a minimum of dis- sion in incineration. { asəd su˙t } comfort in an extreme or new environment. acid treatment [CHEM ENG] A refining process { əkəstəməza¯shən } in which unfinished petroleum products, such as acetate process [CHEM ENG] Acetylation of gasoline, kerosine, and diesel oil, are contacted cellulose (wood pulp or cotton linters) with ace- with sulfuric acid to improve their color, odor, tic acid or acetic anhydride and sulfuric acid cata- and other properties. { asəd tre¯tmənt } lyst to make cellulose acetate resin or fiber. acid-water pollution [ENG] Industrial wastewa- { asəta¯t pra¨səs } ters that are acidic; usually appears in effluent acetone-benzol process [CHEM ENG] A dewax- from the manufacture of chemicals, batteries, ing process in petroleum refining, with acetone artificial and natural fiber, fermentation procand benzol used as solvents. { asəto¯ n ben esses (beer), and mining. { asəd wo˙ dər zo˙ l pra¨səs} pəlu¨shən } acetylene cutting See oxyacetylene cutting. Ackerman linkage See Ackerman steering gear. { əsedəle¯n kətiŋ } { akərmən liŋkij } acetylene generator [ENG] A steel cylinder or acme screw thread [DES ENG] A standard tank that provides for controlled mixing of cal- thread having a profile angle of 29 and a flat cium carbide and water to generate acetylene. crest; used on power screws in such devices as { əsedəle¯n jenəra¯dər } automobile jacks, presses, and lead screws on acetylene torch See oxyacetylene torch. { əsed lathes. Also known as acme thread. { akme¯ əle¯n to˙rch } skru¨ thred } 5

acme thread acme thread See acme screw thread. { akme¯ acoustic generator [ENG ACOUS] A transducer thred } which converts electrical, mechanical, or other acoubuoy [ENG] An acoustic listening device forms of energy into sound. { əku¨ stik jen similar to a sonobuoy, used on land to form an əra¯dər } electronic fence that will pick up sounds of en- acoustic heat engine [ENG] A device that transemy movements and transmit them to orbiting forms heat energy first into sound energy and aircraft or land stations. { əku¨ bo˙ i } then into electrical power, without the use of acoustical ceiling [BUILD] A ceiling covered moving mechanical parts. { əku¨ stik ¦he¯t en with or built of material with special acoustical jən } properties. { əku¨ stəkəl se¯liŋ } acoustic hologram [ENG] The phase interferacoustical ceiling system [BUILD] A system for ence pattern, formed by acoustic beams, that is the structural support of an acoustical ceiling; used in acoustical holography; when light is lighting and air diffusers may be included as part made to interact with this pattern, it forms an of the system. { əku¨ stəkəl se¯liŋ sistəm } image of an object placed in one of the beams. acoustical door [BUILD] A solid door with gas- { əku¨ stik ha¨ləgram } keting along the top and sides, and usually an acoustic horn See horn. { əku¨ stik ho˙rn } automatic door bottom, designed to reduce acoustic jamming [ENG ACOUS] The deliberate noise transmission. { əku¨ stəkəl do˙r } radiation or reradiation of mechanical or electro- acoustical model [CIV ENG] A model used to acoustic signals with the objectives of obliterat- investigate certain acoustical properties of an ing or obscuring signals which the enemy is auditorium or room such as sound pressure dis- attempting to receive and of deterring enemy tribution, sound-ray paths, and focusing effects. weapons systems. { əku¨ stik jamiŋ } { əku¨ stəkəl ma¨dəl } acoustic labyrinth [ENG ACOUS] Special baffle acoustical treatment [CIV ENG] That part of arrangement used with a loudspeaker to prevent building planning that is designed to provide a cavity resonance and to reinforce bass response. proper acoustical environment; includes the use { əku¨ stik labərinth } of acoustical material. { əku¨ stəkəl tre¯t acoustic line [ENG ACOUS] The acoustic equiv- mənt } alent of an electrical transmission line, involving acoustic array [ENG ACOUS] A sound-transmit- baffles, labyrinths, or resonators placed at the ting or sound-receiving system whose elements rear of a loudspeaker and arranged to help repro- are arranged to give desired directional charac- duce the very low audio frequencies. { əku¨ s teristics. { əku¨ stik əra¯ } tik lı¯n } acoustic center [ENG ACOUS] The center of the acoustic ocean-current meter [ENG] An instru- spherical sound waves radiating outward from ment that measures current flow in rivers and an acoustic transducer. { əku¨ stik sentər } oceans by transmitting acoustic pulses in oppo- acoustic clarifier [ENG ACOUS] System of cones site directions parallel to the flow and measuring loosely attached to the baffle of a loudspeaker the difference in pulse travel times between and designed to vibrate and absorb energy dur- transmitter-receiver pairs. { əku¨ stik o¯shən ing sudden loud sounds to suppress these kərənt me¯dər } sounds. { əku¨ stik klarəfı¯ər } acoustic position reference system [ENG] An acoustic coupler [ENG ACOUS] A device used acoustic system used in offshore oil drilling to between the modem of a computer terminal and provide continuous information on ship position a standard telephone line to permit transmission with respect to an ocean-floor acoustic beacon of digital data in either direction without making transmitting an ultrasonic signal to three hy- direct connections. { əku¨ stik kəplər } drophones on the bottom of the drilling ship. acoustic delay [ENG ACOUS] A delay which is deliberately introduced in sound reproduction { əku¨ stik pəzishən ¦refrəns sistəm } by having the sound travel a certain distance acoustic radar [ENG] Use of sound waves with along a pipe before conversion into electric sig- radar techniques for remote probing of the lower nals. { əku atmosphere, up to heights of about 5000 feet ¨ stik dila¯ } acoustic detection [ENG] Determination of the (1500 meters), for measuring wind speed and profile of a geologic formation, an ocean layer, direction, humidity, temperature inversions, and or some object in the ocean by measuring the turbulence. { əku¨ stik ra¯da¨r } reflection of sound waves off the object. acoustic radiator [ENG ACOUS] A vibrating sur- { əku¨ stik ditekshən } face that produces sound waves, such as a loudacoustic fatigue [MECH] The tendency of a ma- speaker cone or a headphone diaphragm. terial, such as a metal, to lose strength after { əku¨ stik ra¯de¯a¯dər } acoustic stress. { əku¨ stik fəte¯g } acoustic radiometer [ENG] An instrument for acoustic feedback [ENG ACOUS] The reverbera- measuring sound intensity by determining the tion of sound waves from a loudspeaker to a unidirectional steady-state pressure caused by preceding part of an audio system, such as to the reflection or absorption of a sound wave at the microphone, in such a manner as to rein- a boundary. { əku¨ stik ra¯dəa¨mədər } force, and distort, the original input. Also acoustic ratio [ENG ACOUS] The ratio of the inknown as acoustic regeneration. { əku¨ stik tensity of sound radiated directly from a source fe¯dbak } to the intensity of sound reverberating from the 6

active accommodation walls of an enclosure, at a given point in the electronics that involves use of acoustic waves at enclosure. { əku¨ stik ra¯sho¯ } microwave frequencies (above 500 megahertz), acoustic reflex enclosure [ENG ACOUS] A loud- traveling on or in piezoelectric or other solid speaker cabinet designed with a port to allow a substrates. Also known as pretersonics. low-frequency contribution from the rear of the { ə¦ku¨ sto¯əlek¦tra¨niks } speaker cone to be radiated forward. { əku¨ s acquisition [ENG] The process of pointing an tik re¯fleks inklo¯zhər } antenna or a telescope so that it is properly acoustic regeneration See acoustic feedback. oriented to allow gathering of tracking or teleme- { əku¨ stik re¯jenəra¯shən } try data from a satellite or space probe. { ak acoustic seal [ENG ACOUS] A joint between two wəzishən } parts to provide acoustical coupling with low acquisition and tracking radar [ENG] A radar losses of energy, such as between an earphone set capable of locking onto a received signal and and the human ear. { əku¨ stik se¯l } tracking the object emitting the signal; the radar acoustic signature [ENG] In acoustic detection, may be airborne or on the ground. { ak the profile characteristic of a particular object wəzishən ən trakiŋ ra¯da¨r } or class of objects, such as a school of fish or acre [MECH] A unit of area, equal to 43,560 a specific ocean-bottom formation. { əku¨ stik square feet, or to 4046.8564224 square meters. signəchər } { a¯kər } acoustic spectrograph [ENG] A spectrograph acrometer [ENG] An instrument to measure the used with sound waves of various frequencies density of oils. { əkra¨mədər } to study the transmission and reflection proper- actinogram [ENG] The record of heat from a ties of ocean thermal layers and marine life. source, such as the sun, as detected by a re- { əku¨ stik spektrəgraf } cording actinometer. { aktinəgram } acoustic spectrometer [ENG ACOUS] An instru- actinograph [ENG] A recording actinometer. ment that measures the intensities of the various { aktinəgraf } frequency components of a complex sound wave. actinometer [ENG] Any instrument used to Also known as audio spectrometer. { əku¨ stik measure the intensity of radiant energy, particu- spektra¨mədər } larly that of the sun. { aktəna¨mədər } acoustic strain gage [ENG] An instrument used action [MECH] An integral associated with the for measuring structural strains; consists of a trajectory of a system in configuration space, length of fine wire mounted so its tension varies equal to the sum of the integrals of the general- with strain; the wire is plucked with an electro- ized momenta of the system over their canoni- magnetic device, and the resulting frequency of cally conjugate coordinates. Also known as vibration is measured to determine the amount phase integral. { akshən } of strain. { əku¨ stik stra¯n ga¯j } activate [ELEC] To make a cell or battery opera- acoustic theodolite [ENG] An instrument that tive by addition of a liquid. [ELECTR] To treat uses sound waves to provide a continuous verti- the filament, cathode, or target of a vacuum tube cal profile of ocean currents at a specific location. to increase electron emission. [ENG] To set { əku¨ stik the¯a¨dəlı¯t } up conditions so that the object will function as acoustic transducer [ENG ACOUS] A device that designed or required. { aktəva¯t } converts acoustic energy to electrical or mechan- activated sludge [CIV ENG] A semiliquid mass ical energy, such as a microphone or phonograph removed from the liquid flow of sewage and sub- pickup. { əku¨ stik tranzdu¨sər } jected to aeration and aerobic microbial action; acoustic transformer [ENG ACOUS] A device, the end product is dark to golden brown, partially such as a horn or megaphone, for increasing the decomposed, granular, and flocculent, and has efficiency of sound radiation. { əku¨ stik tranz fo an earthy odor when fresh. { aktəva¯dəd ˙rmər } acoustic treatment sləj } [BUILD] The use of soundabsorbing materials to give a room a desired activated-sludge effluent [CIV ENG] The liquid degree of freedom from echo and reverberation. from the activated-sludge treatment that is further processed by chlorination or by oxidation. { əku¨ stik tre¯tmənt } acoustic-wave-based sensor [ENG] A device { aktəva¯dəd sləj eflu¨ənt } that employs a surface acoustic wave, a thick- activated-sludge process [CIV ENG] A sewage ness-shear-mode resonance (a resonant oscilla- treatment process in which the sludge in the tion of a thin plate of material), or other type of secondary stage is put into aeration tanks to acoustic wave to measure the physical properties facilitate aerobic decomposition by microorganof a thin film or liquid layer or, in combination isms; the sludge and supernatant liquor are sepwith chemically sensitive thin films, to detect arated in a settling tank; the supernatant liquor the presence and concentration of chemical ana- or effluent is further treated by chlorination or lytes. { ə¦ku¨stik wa¯ vba¯st sensər } oxidation. { aktəva¯dəd sləj pra¨səs } acoustic well logging [ENG] A ground explora- active accommodation [CONT SYS] The altertion method that uses a high-energy sound ation of preprogrammed robotic motions by the source and a receiver, both underground. integrated effects of sensors, controllers, and the { əku¨ stik wel la¨giŋ } robotic motion itself. { aktiv əka¨məda¯ acoustoelectronics [ENG ACOUS] The branch of shən } 7

active area active area [ELECTR] The area of a metallic rec- activity [SYS ENG] The representation in a PERT tifier that acts as the rectifying junction and con- or critical-path-method network of a task that ducts current in the forward direction. { aktiv takes up both time and resources and whose ere¯ə } performance is necessary for the system to move active-cord mechanism [MECH ENG] A slender, from one event to the next. { aktivəde¯ } chainlike grouping of joints and links that makes activity chart [IND ENG] A tabular presentation active and flexible winding motions under the of a series of operations of a process plotted control of actuators attached along its body. against a time scale. { aktivəde¯ cha¨rt } { aktiv ¦ko˙rd mekənizəm } activity duration [SYS ENG] In critical-path- active detection system [ENG] A guidance sys- method terminology, the estimated amount of tem which emits energy as a means of detection; time required to complete an activity. { aktiv for example, sonar and radar. { aktivditek əde¯ dəra¯shən } shən sistəm } activity sampling See work sampling. { aktivəd active earth pressure [CIV ENG] The horizontal e¯ sampliŋ } pressure that an earth mass exerts on a wall. actual cost [IND ENG] Cost determined by an { aktiv ərth preshər } allocation of cost factors recorded during pro- active illumination [ENG] Lighting whose direc- duction. { akchəwəl ko˙ st } tion, intensity, and pattern are controlled by actual cubic feet per minute [CHEM ENG] A commands or signals. { aktiv əlu¨ məna¯ measure of the volume of gas at operating tem- shən } perature and pressure, as distinct from volume active infrared detection system [ENG] An in- of gas at standard temperature and pressure. frared detection system in which a beam of infra- Abbreviated acfm. { akchəwəl kyu¨bik fe¯t red rays is transmitted toward possible targets, and rays reflected from a target are detected. pər minət } { aktiv infrəred ditekshən sistəm } actual horsepower See actual power. { akchə active leaf [BUILD] In a door with two leaves, wəl ho˙rspau˙ər } the leaf which carries the latching or locking actual power [MECH ENG] The power delivered mechanism. Also known as active door. { ak at the output shaft of a source of power. Also tiv le¯f } known as actual horsepower. { akchəwəl active material [ELEC] 1. A fluorescent material pau˙ər } used in screens for cathode-ray tubes. 2. An actual time [IND ENG] Time taken by a worker energy-storing material, such as lead oxide, used to perform a given task. { akchəwəl tı¯m } in the plates of a storage battery. 3. A material, actuate [MECH ENG] To put into motion or such as the iron of a core or the copper of a mechanical action, as by an actuator. { ak winding, that is involved in energy conversion in chəwa¯t } a circuit. 4. In a battery, the chemically reactive actuated roller switch [MECH ENG] A centrifumaterial in either of the electrodes that partici- gal sequence-control switch that is placed in pates in the charge and discharge reactions. contact with a belt conveyor, immediately pre- [ELECTR] The material of the cathode of an elec- ceding the conveyor which it controls. { ak tron tube that emits electrons when heated. chəwa¯dəd ro¯lər swich } { aktivmətire¯əl } actuating system [CONT SYS] An electric, hy- active sludge [CIV ENG] A sludge rich in de- draulic, or other system that supplies and trans- structive bacteria used to break down raw sew- mits energy for the operation of other mecha- age. { aktiv sləj } nisms or systems. { akchəwa¯diŋ sistəm } active solar system [MECH ENG] A solar heat- actuator [CONT SYS] A mechanism to activate ing or cooling system that operates by mechani- process control equipment by use of pneumatic, cal means, such as motors, pumps, or valves. hydraulic, or electronic signals; for example, a { aktiv so¯lər sistəm } valve actuator for opening or closing a valve to active sonar [ENG] A system consisting of one control the rate of fluid flow. [ENG ACOUS] An or more transducers to send and receive sound, auxiliary external electrode used to apply a equipment for the generation and detection of known electrostatic force to the diaphragm of a the electrical impulses to and from the trans- microphone for calibration purposes. Also ducer, and a display or recorder system for the known as electrostatic actuator. [MECH ENG] observation of the received signals. { aktiv A device that produces mechanical force by so¯ na¨r } means of pressurized fluid. { akchəwa¯dər } active system [ENG] In radio and radar, a sys- adamantine drill [MECH ENG] A core drill with tem that requires transmitting equipment, such hardened steel shot pellets that revolve under as a beacon or transponder. { aktiv sistəm } active vibration suppression the rim of the rotating tube; employed in rotary [MECH ENG] The prevention of undesirable vibration by tech- drilling in very hard ground. { adəmante¯n niques involving feedback control of the vibra- dril } tory motion, whereby the forces designed to re- Adam’s catalyst [CHEM ENG] Finely divided duce the vibration depend on the system dis- plantinum(IV) oxide, made by fusing hexachloroplatinic(IV) acid with NaNO3 placements and velocities. { aktivvı¯bra¯shən . { adəmz kad səpreshən } ələst } 8

adjustable base anchor ada mud [ENG] A conditioning material added harmonically related frequencies. { ¦adədiv to drilling mud to obtain satisfactory cores and sinthəsəs } samples of formations. { a¯də məd } adhesion [ENG] Intimate sticking together of adapter [ENG] A device used to make electrical metal surfaces under compressive stresses by or mechanical connections between items not formation of metallic bonds. [MECH] The originally intended for use together. { ədap force of static friction between two bodies, or tər } the effects of this force. { adhe¯zhən } adaptive branch [CONT SYS] A branch instruc- adhesional work [THERMO] The work required tion in the computer program controlling a robot to separate a unit area of a surface at which two that may lead the robot to execute a series of substances are in contact. Also known as work of adhesion. { adhe¯zhənəl wərk } instructions, depending on external conditions. adhesive bond [MECH] The forces such as di- { ədaptiv branch } adaptive control pole bonds which attract adhesives and base [CONT SYS] A control method materials to each other. { adhe¯ziv ba¨nd } in which one or more parameters are sensed and adhesive bonding [ENG] The fastening to- used to vary the feedback control signals in order gether of two or more solids by the use of glue, to satisfy the performance criteria. { ədaptiv cement, or other adhesive. { adhe¯ziv ba¨nd kəntro¯ l } iŋ } adaptive-control function [CONT SYS] That adhesive strength [ENG] The strength of an ad- level in the functional decomposition of a large- hesive bond, usually measured as a force re- scale control system which updates parameters quired to separate two objects of standard of the optimizing control function to achieve a bonded area, by either shear or tensile stress. best fit to current plant behavior, and updates { adhe¯ziv streŋkth } parameters of the direct control function to adiabatic [THERMO] Referring to any change in achieve good dynamic response of the closed- which there is no gain or loss of heat. { ¦ade¯ loop system. { ədaptivkəntro¯ l fəŋkshən } ə¦badik } adaptive robot [CONT SYS] A robot that can al- adiabatic compression [THERMO] A reduction ter its responses according to changes in the in volume of a substance without heat flow, in environment. { ədaptiv ro¯ ba¨t } or out. { ¦ade¯ə¦badik kəmpreshən } adaptive structure [ENG] A structure whose adiabatic cooling [THERMO] A process in which geometric and inherent structural characteristics the temperature of a system is reduced without can be changed beneficially in response to exter- any heat being exchanged between the system nal stimulation by either remote commands or and its surroundings. { ¦ade¯ə¦badik ku¨ liŋ } automatic means. { ədaptiv strəkchər } adiabatic curing [ENG] The curing of concrete adaptive system [SYS ENG] A system that can or mortar under conditions in which there is no change itself in response to changes in its envi- loss or gain of heat. { ¦ade¯ə¦badik kyu˙riŋ } ronment in such a way that its performance im- adiabatic engine [MECH ENG] A heat engine or proves through a continuing interaction with its thermodynamic system in which there is no gain surroundings. { ədaptiv sistəm } or loss of heat. { ¦ade¯ə¦badik enjən } adaptometer [ENG] An instrument that meas- adiabatic envelope [THERMO] A surface en- ures the lowest brightness of an extended area closing a thermodynamic system in an equilib- that can barely be detected by the eye. rium which can be disturbed only by long-range { adapta¨mədər } forces or by motion of part of the envelope; intu- addendum [DES ENG] The radial distance be- itively, this means that no heat can flow through tween two concentric circles on a gear, one being the surface. { ¦ade¯ə¦badik envəlo¯ p } that whose radius extends to the top of a gear adiabatic expansion [THERMO] Increase in voltooth (addendum circle) and the other being that ume without heat flow, in or out. { ¦ade¯ə¦bad which will roll without slipping on a circle on a ik ikspanchən } mating gear (pitch line). { ədendəm } adiabatic extrusion [ENG] Forming plastic obaddendum circle [DES ENG] The circle on a gear jects by energy produced by driving the plastic passing through the tops of the teeth. { əden mass through an extruder without heat flow. dəm sərkəl } { ¦ade¯ə¦badik ikstru¨zhən } adder [ELECTR] A circuit in which two or more adiabatic process [THERMO] Any thermodysignals are combined to give an output-signal namic procedure which takes place in a system amplitude that is proportional to the sum of the without the exchange of heat with the surroundinput-signal amplitudes. Also known as adder ings. { ¦ade¯ə¦badik pra¨səs } circuit. { adər } adiabatic vaporization [THERMO] Vaporization adding tape [ENG] A surveyor’s tape that is cali- of a liquid with virtually no heat exchange bebrated from 0 to 100 by full feet (or meters) in one tween it and its surroundings. { ¦ade¯ə¦badik direction, and has 1 additional foot (or meter) va¯pərəza¯shən } beyond the zero end which is subdivided in adit [CIV ENG] An access tunnel used for excavatenths or hundredths. { adiŋ ta¯p } tion of the main tunnel. { adət } additive synthesis [ENG ACOUS] A method of adjustable base anchor [BUILD] An item which synthesizing complex tones by adding together holds a doorframe above a finished floor. an appropriate number of simple sine waves at { əjəstəbəl ¦ba¯s aŋkər } 9