Consider, for the moment, what an engineering drawing represents o It is a detailed set of instructions that is, orders) that tells the machinist, molder die caster, and so on, to make this part in accordance with the information indicated and to the dimensions specified--any unauthorized deviations or errors made in fabrication are your responsibility 此时,想一想一张工程图表达了什么?它(工程图)是 组详细的加工说明,根据它所表达的信息和详细的尺 寸标注,机械工、制模工、压铸工等可以加工这个的零 件,制造中出现的任何无根据的的偏差与错误,都是你 们的责任
⚫ Consider, for the moment，what an engineering drawing represents． ⚫ It is a detailed set of instructions（that is，orders）that tells the machinist，molder，die caster，and so on， to“make this part in accordance with the information indicated and to the dimensions specified——any unauthorized deviations or errors made in fabrication are your responsibility．” 此时，想一想一张工程图表达了什么？它（工程图）是 一组详细的加工说明，根据它所表达的信息和详细的尺 寸标注，机械工、制模工、压铸工等可以加工这个的零 件，制造中出现的任何无根据的的偏差与错误，都是你 们的责任
o This statement is, of course, exaggerated 夸张 drawings-the responsibility for which rests with the ga pn Nevertheless, it is meant to convey the importance the complete and proper dimensioning of engineerir de designer o Careless dimensioning can lead to increase production costs and/or outright waste as a result of errors 当然,这也许有些夸张。 但是,它说明了工程图完美尺寸标注的重要性,这 有待于设计师去完成 粗糙的尺寸标注可能会导致成本的增加、(或者) 由于错误导致材料的全部报废
⚫ This statement is，of course，exaggerated． ⚫ Nevertheless，it is meant to convey the importance of the complete and proper dimensioning of engineering drawings-the responsibility for which rests with the designer． ⚫ Careless dimensioning can lead to increase production costs and/or outright waste as a result of errors． 当然，这也许有些夸张。 但是，它说明了工程图完美尺寸标注的重要性，这 有待于设计师去完成。 粗糙的尺寸标注可能会导致成本的增加、（或者） 由于错误导致材料的全部报废。 夸张的