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 puls
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
故字开头的成语信号比signal-to-noi ratio
信号电平signal levels
地面系统terrestrial system
噪声功率noi power
二进制传输binary transmission
反向操作rever operation
8位码序列8-digit quence
接收端receiving terminal
帧格式frame format
同步字synchronization word
the schemes for performing the three function 实现这三项功能的方案
a ries of amplitude values 一串幅值
a speech channel of telephone quality 电话质量的话路
a quence of 8-binary digits 一个8位二进制码的序列
跳绳瘦胸吗
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 pul with a repetition rate of 64KHz 重复率为64KHz的脉冲
the relationship of the true signal to the noi 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 word页码怎么设置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 t of puls 将抽样的幅值转换成一串脉冲的单元
a quence 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 quence of puls called synchronization word 被称为同步字的独特的码序列
terrestrial system 地面系统
the prence or abnce of the pul 脉冲的“有”或“无”
a high-speed electronic switch 高速的电子开关
the time division励志短句致自己奋斗 multiplexer 时分多路复用器
Time Division Multiplexing 时分多路复用联奕
Unit2
串行接口 rial 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 论语八佾
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 conds
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 rial data transmission 异步串行数据传输
The most popular rial interface 最为流行的串行接口
日本家族企业
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
士官等级联网技术 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 prentation layer
传输层 the transport layer
数据链路层 the data link layer
网络服务 network rvices
文件接入 file access
数据格式 data format
主机 host
协议 protocol
连接 connectivity
逻辑地址 logical addressing
Networking technology 联网技术
Proprietary networking system 专用联网系统
The international Organization for Standardization 国际标准规划组织
Compatibility between the various type of networks 各种网络之间的兼容性
Seven numbered layers 七层协议
Standardization of network components 网络部件的标准化
Error recovery 纠错
Receiving host’s system 发方主机系统
Connection-oriented circuits 面向连接的电路
Information flow control 信息流控制
Network media access 网络媒体接入
Electrical specification 电气特性
Maximum transmission distance 最大传输距离
Uint 4
传输控制协议transmission control protocol
互联协议Internet protocol
数据通信data communication
微波microwave
高层协议higher-level protocol
流量控制traffic control
目的地destination
（信）源resource
段gment
互联层Internet layer
分组交换packet switching
超文本传输协议hypertext transfer protocol
灵活性flexibility
数据报datagram
transmission control protocol传输控制协议
Internet protocol互联协议
satellite links卫星链路
the Standard On which the internet has grown互联网发展所基于的标准
