1.《通信原理》词汇Uint1
抽样量化和编码：sampling quantizing and coding
话路：speech channel
幅值：amplitude value
抽样频率：sampling frequency
抽样速率：sampling speed rate
脉冲流：stream of pulses
重复率：repetition rate
编码过程：coding processs
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
信号比signal-to-noise 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-digit sequence
接收端receiving terminal
帧格式frame format
同步字synchronization word
the schemes for performing these three function 实现这三项功能的方案
a series of amplitude values 一串幅值
a speech channel of telephone quality 电话质量的话路
a sequence of 8-binary digits 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 300Hz 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 汽车点火系统的大火
the stream of the pulsese with a repetition rate of 64KHz 重复率为64KHz的脉冲
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 由卫星上收到的信号
the complete information about a particular message 一条特定消息的全部信息
the shape of the transmitted signal 被传信号的波形
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 son on涉及到第一路、第二路及其他各路的序列
a unique sequence of pulses called synchronization word 被称为同步字的独特的码序列
terrestrial system 地面系统
the presence or absence of the pulse 脉冲的“有”或“无”
a high-speed electronic switch 高速的电子开关
the time division multiplexer 时分多路复用器
Time Division Multiplexing 时分多路复用Unit2
串行接口serial interface
显示终端CRT terminal
发送器与接收器transmitter and receiver
数据传输data transmission
数据流data stream
闲置状态the idle state
传号电平mark level
空号电平space level
起始位start bit
停止位stop bit
T秒的持续时间duration of T seconds
奇偶校验位parity bit
错误标志error flag
传输错误transmission error
下降沿falling edge
符号间的空格intersymbol space
接收机的定时receiver timing
本地时钟local clock
磁带magnetic tape
控制比特control bit
逻辑1电平logical 1 level
二进制数据binary data
明显的缺点obvious disadvantage
asynchronous serial data transmission 异步串行数据传输
The most popular serial interface 最为流行的串行接口
The transmitted data 所传送的数据
The clocks at the transmitter and receiver发送器和接收器的时钟
The era of teleprinter电传机的时代
The dots and dashes of a character一个字符的点和划
Three times the duration of intersymbol space符号间空格持续时间的三倍
The group of bits called characters 被称为字符的比特组
The invariable units comprising 7 or 8 bits of information由7或8个比特的信息组成的固定单元
A clock generated locally by the receiver 由接收机本地产生的时钟
The received parity bit following the character 在字符后所收到的奇偶校验位
The falling edge of the start bit 起始位的下降沿
The character-oriented nature of the data link 数据链路面向字符的特性
Uint3
联网技术networking technology
国际标准化组织international Organization for Standardization (ISO)
参考模型reference model
数据分组packet data
应用程序application program
网络媒体network media
分层called layering
硬件和软件hardware and software
表示层the presentation layer
传输层the transport layer
数据链路层the data link layer
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