信息与通信工程专业英语 教学课件 作者 徐秀兰 徐劲 李程 信息与通信工程专业英语02part02.ppt

5．In order to accommodate future services that require high capacity, a broadband component is envisioned with a target peak data cell throughput of more than 20 Mbit/s in vehicular environments, using a 50- to 100-MHz bandwidth. 本句中的with a target peak data cell throughput of …是指一个蜂窝的峰值目标数据吞吐量。 6．It is always on, technologically transparent, and affordable with reasonable QoS and high security. It is always on可以理解为, 总是依附于或涉及…… 7．If a consumer can do something at home or in the office while wired to the Internet, those consumers must be able to do it wirelessly in a fully mobile environment. 此句中的 wired 在此作-ed型动词（也就是过去分词）用，If从句表达的意思是，如果当一个客户在家里或是在办公室里连接到因特网上时能做什么，…… 8．Some would call 4G mobile broadband services, but that was supposedly the definition of 3G. 这句话的意思是：某些人愿意把4G 称为移动宽带业务，但是这令人想起3G。 9．The definition of 4Gthat ITU-R approved in June 2003 states that the data rates should be around 100Mbit/s when moving fast (like in a train) and 1Gbit/s when not moving. 此句中的两个when 引导的是现在分词短语，moving fast是快速行进的意思。全句意思请见参考译文。 10．The 4G will be a fully IP-based integrated system of systems and network of networks… 这里的system of systems and network of networks表示多个系统集成的系统，及多个网络集成的网络。 11．The 4G will be a fully IP-based integrated system of systems and network of networks achieved after the convergence of wired and wireless networks as well as computer, consumer electronics, communication technology, and several other convergences that will be capable of providing 100Mbit/s and 1 Gbit/s, respectively, in outdoor and indoor environments with end-to-end QoS and high security, offering any kind of services anytime, anywhere, at affordable cost and one billing. 本句是仅带有一个定语从句的复合句，但却带有相当复杂的短语结构。achieved after the convergence of wired and wireless networks as well as computer, consumer electronics, communication technology是一个过去分词短语作定语修饰 systems 和networks，但紧跟achieved之后的是介词短语after…（见科技语法的（四）3. 分词短语作状语部分及（六）介词短语部分）。the con