unit 9GSM (Global System for Mobile Communication)
unit 9 GSM (Global System for Mobile Communication)
The success of mobile systems across the world is a signthat communication is moving towards a more personalizedconvenient system.personalize［‘p：snlaiz］v.使个人化convenient［kn‘vi:njnt］a.便利的，方便的People who have to use a mobile phone on business soonbegin to realize that the ability to phone any time, anyplace in one's personal life rapidly becomes a necessitynot a convenience.[ni5sesitin.必要性，需要，必需品necessity[kEn5vi:njEns]n.便利，方便，有益，有用的，方convenience的用具、机械、安排等
The success of mobile systems across the world is a sign that communication is moving towards a more personalized, convenient system. personalize [‘p :s n laiz] v.使个人化 convenient [k n‘vi:nj nt] a.便利的，方便的 People who have to use a mobile phone on business soon begin to realize that the ability to phone any time, any place in one's personal life rapidly becomes a necessity, not a convenience. necessity [ni5sesiti] n.必要性, 需要,必需品 convenience [kEn5vi:njEns]n.便利, 方便, 有益, 有用的,方便 的用具、机械、安排等
The speed and rapidity with which the personalcommunications revolution takes place is, unlike fixedtransmission systems, highly dependent on technology andcommunication standards.rapidity［rE5piditi]n.速度，迅速，急速revolution[7revE5lu:FEn]n.革命，旋转For mobile the three key elements to achieving servicetake-up are the cost, the size and the weight of thephone, and the cost and quality of the link.接受，领take-up[5teik5Qp]］n.拉紧，紧线器，拿起，举起；取崛起腾飞
The speed and rapidity with which the personal communications revolution takes place is, unlike fixed transmission systems, highly dependent on technology and communication standards. rapidity [rE5piditi] n.速度, 迅速, 急速 revolution [7revE5lu:FEn] n. 革命, 旋转 For mobile the three key elements to achieving service take-up are the cost, the size and the weight of the phone, and the cost and quality of the link. take-up [5teik5Qp] n.拉紧, 紧线器, 拿起, 举起; 接受, 领 取 崛起 腾飞
If any of these are wrong, especially the first two, thenmarket growth is liable to be severely restricted.1iable [5lalEb(E)I] adj.1（常与to连用）易于的，有倾向的2（常与for连用）负有责任的，负责的3将受到法律制裁的severely[si5viEli]adv.严格地，激烈地，严重地[ris5trikt] vt. 限制,，约束，限定restrict?
If any of these are wrong, especially the first two, then market growth is liable to be severely restricted. liable [5laIEb(E)l] adj. 1（常与to连用）易于.的，有.倾向的 2（常与for连用）负有责任的，负责的 3 将受到法律制裁的 severely [si5viEli] adv. 严格地, 激烈地,严重地 restrict [ris5trikt] vt. 限制, 约束, 限定
The fixed telephone service is global and theinterconnection varies from coaxial cable to optical fibreand satellite.The national standards are different, but with commoninterfaces and interface conversion, interconnection cantake place.vary[5vzEri]vt．改变，变更，使多样化vi.变化，不同，违反coaxial［kEu5AksE]adj.同轴的，共轴的axial [5AksiEl] adj轴的，轴向的conversion[kEn5vE:FEn］n.变换，转化convertv.conversation［7kCnvE5seiFEn]n.会话，交谈conversekEn5vE:s]vi.谈话，交谈，认识n。相反的事物，倒，逆行adj.相反的，颠倒的
The fixed telephone service is global and the interconnection varies from coaxial cable to optical fibre and satellite. The national standards are different, but with common interfaces and interface conversion, interconnection can take place. vary [5vZEri] vt. 改变, 变更, 使多样化vi.变化, 不同, 违反 coaxial [kEu5AksEl] adj. 同轴的, 共轴的 axial [5AksiEl] adj. 轴的, 轴向的 conversion [kEn5vE:FEn] n. 变换, 转化 convert v. conversation [7kCnvE5seiFEn] n.会话, 交谈 converse[kEn5vE:s] vi.谈话, 交谈, 认识 | n.相反的事物, 倒, 逆行adj.相反的, 颠倒的