职称英语考试短语.doc

Unit 1请将下述词语译成英文 抽样量化与编码　　sampling quantizing and coding 话路　　speech channel 幅值　　amplitude value 抽样频率 sampling frequency 抽样速率 sampling rate 脉冲流 stream of pulses 重复率 repetition rate 编码过程 coding process 模拟信号 analog signal 传输质量 transmission quality 数字通信 digital communication 数字传输 digital transmission 含噪声的环境 noisy environment 传输路由 transmission path 信噪比 signal-to-noisy ratio 信号电平 signal levels 地面系统 terrestrial system 噪声功率 noise power 二进制传输 binary transmission 反向操作 reverse operation 8位码序列 8-digital sequence 接收端 receiving terminal 帧格式 frame format 同步字　 synchronization word 请将下列词组译成中文： The schemes for performing these three function 实现这三项功能的方案 A series of amplitude value 一串幅值 A speech channel of telephone quality 电话质量的话路 A sequence of 8-binary digital 　一个8位二进制码的序列 A minimum theoretical sampling frequency 理论上的最小抽样频率 A voice channel occupying the range 300 HZ to 3.4kHZ 占据着300HZ到3.4KHZ频率范围的话路 8-digits per sample value 每个样值8位码 The sparking of a car ignition system 汽车点为系统的打火 The stream of the pulses with a repetition rate of 64 kHZ 重复率为64KHZ的脉冲流 The relationship of the true signal to the noise signal 真实信号与噪声信号的关系 The signal received from a satellite 从卫星接收的信号 The complete information about a particular message 一条特定消息中的全部信息 The shape of the transmitted signal传输信号的波形 The attenuation introduced by transmission path 由传输路由引入的衰减 The unit that converts sampled amplitude value to a set of pulses 将抽样的幅值转换成一串脉冲的单元 A sequence relating to channel 1,2 and so on涉及到第一路第二路及其它各路的序列 A unique sequence of pulse called synchronization word 被称作同步字的特定的码序列 Terrestrial system地面系统 The presence or absence of the pulse　　脉冲的“有”或“无” A high-speed electronic switch高速电子开关 The time division multiplexer　　时分多路复用器 Time division multiplexing时分多路复用 Unit3请将下述词组译成英文 联网技术　　networking technology 国际标准化组织　the international organization for standardization 参考模型　 reference model 数据分组 data packets 应