电信专业英英词典B-2

　　Bit - This is a contraction¹ of the term Binary² digIT³, and it is a number in base 2, which means that it can only be a 0 or a 1.

　　Bit Error Rate - The rate of message bits that are in error (an error rate of 106 means that there will be on average one error for every million bits).

　　Bit Rate - This is the speed of a digital transmission and is measured in bits per second.

　　Bitstream - This is data transmitted in a continuous stream (i.e., there are no breaks between characters).

　　Blind Dial - This is when a modem⁴ is instructed to dial a number without waiting for a dial tone (when connecting to a line with no dial tone).

　　Block - A group of bits transmitted as a single unit.

　　Block Down Converter - A device that is analogous⁵ in function to an electrical transformer and is used to drop the 3.7 to 4.2 KHz signal down to UHF or lower frequencies (i.e, 1 GHz and lower).

　　Board - This is a system on which you can view or leave messages.

　　Bps - This stands for Bits Per Second is a transmission rate.

　　Braces⁶ - These are the characters "{" and "}".

　　Break - This is merely an interruption of some sort.

　　Broadband - Data transmission of greater than 56 Kbps (kilo-bytes per second) that can carry multiple signals at once. The larger the bandwidth of a carrier, the greater the amount of information it can carry.

　　Broadbeam - A single large circular beam, which covers a large geographic⁷ area (opposite of the narrow beam produced by more powerful antennas).

　　Broadcast - The sending of one transmission to multiple users in a defined group, area, or region. See Multicast and Unicast.

　　Browse⁸ - To read through a list of messages or surf the internet (with a browser⁹, such as Netscape or IE).

　　Buffer¹⁰ - This is the place in memory where the transmitted information is temporarily stored before transmission or after reception.

　　Bulletin Board System - This is an electronic message system, usually ran on a microcomputer¹¹.

　　Busy - When a phone line or service is used being used by someone.

　　Busy Signal - The sound that signifies that a phone line or service is in use (i.e., busy).

　　Byte - 8 bits.

1 contraction   

n.缩略词，缩写式，害病

参考例句：

• The contraction of this muscle raises the lower arm.肌肉的收缩使前臂抬起。
• The forces of expansion are balanced by forces of contraction.扩张力和收缩力相互平衡。

2 binary   

adj.二，双；二进制的；n.双(体)；联星

参考例句：

• Computers operate using binary numbers.计算机运行运用二进位制。
• Let us try converting the number itself to binary.我们试一试，把这个数本身变成二进制数。

3 digit   

n.零到九的阿拉伯数字，手指，脚趾

参考例句：

• Her telephone number differs from mine by one digit.她的电话号码和我的只差一个数字。
• Many animals have five digits.许多动物有5趾。

4 modem   

n.调制解调器

参考例句：

• Does your computer have a modem?你的电脑有调制解调器吗？
• Provides a connection to your computer via a modem.通过调制解调器连接到计算机上。

5 analogous   

adj.相似的；类似的

参考例句：

• The two situations are roughly analogous.两种情況大致相似。
• The company is in a position closely analogous to that of its main rival.该公司与主要竞争对手的处境极为相似。

6 braces   

n.吊带，背带；托架( brace的名词复数 )；箍子；括弧；（儿童）牙箍v.支住( brace的第三人称单数 )；撑牢；使自己站稳；振作起来

参考例句：

• The table is shaky because the braces are loose. 这张桌子摇摇晃晃，因为支架全松了。
• You don't need braces if you're wearing a belt! 要系腰带，就用不着吊带了。

7 geographic   

adj.地理学的，地理的

参考例句：

• The city's success owes much to its geographic position. 这座城市的成功很大程度上归功于它的地理位置。 来自《简明英汉词典》
• Environmental problems pay no heed to these geographic lines. 环境问题并不理会这些地理界限。 来自英汉非文学 - 环境法 - 环境法

8 browse   

vi.随意翻阅，浏览；(牛、羊等)吃草

参考例句：

• I had a browse through the books on her shelf.我浏览了一下她书架上的书。
• It is a good idea to browse through it first.最好先通篇浏览一遍。

9 browser   

n.浏览者

参考例句：

• View edits in a web browser.在浏览器中看编辑的效果。
• I think my browser has a list of shareware links.我想在浏览器中会有一系列的共享软件链接。

10 buffer   

n.起缓冲作用的人(或物)，缓冲器；vt.缓冲

参考例句：

• A little money can be a useful buffer in time of need.在急需时，很少一点钱就能解燃眉之急。
• Romantic love will buffer you against life's hardships.浪漫的爱会减轻生活的艰辛。

11 microcomputer   

n.微型计算机，微机

参考例句：

• The main frame is the heart of a microcomputer system.主框架的核心是一个微机系统。
• A microcomputer is a fast and accurate symbol processing system.微型计算机是一种快速、精确的符号处理系统。