电信专业英英词典B-1

 

　　B-Mac - This is a method of transmitting and scrambling¹ television signals; the are time-multiplexed with a digital burst that contains digitized sound, video synchronizing², authorization³, or information.

　　Backdoor - A way of getting into a guarded system without using the required password.

　　Backlog⁴ - The amount of work in process in the factory; it is usually expressed in terms of sales (sales backlog) or satellites (satellite backlog).

　　Backslash - This is the character "\".

　　Backspace - This is the command that causes the cursor on your screen to move back one space, and it can or cannot delete characters.

　　Band Pass Filter - A circuit that will allow signals within a desired frequency band to pass through but prohibits signals outside this frequency band from penetrating⁵.

　　Bandwidth - The range of frequencies, expressed in hertz (Hz), that can pass over a given transmission channel (thus, determining the rate at which information can be transmitted). In satellite based systems a larger bandwidth of 17.5 to 72 MHz is used to spread the television signal; this helps to prevent interference.

　　Baseband - The basic direct output signal, which is in an intermediate frequency base and is obtained directly from a television camera, satellite TV receiver, or video recorder.

　　Baud - The rate of data transmission; it is based on the number of signal elements transmitted in a second. The term comes from the scientist J. M. E. Baudot.

　　BBS - This is an acronym⁶ for Bulletin Board Systems, which typically allow users to leave messages for other users.

　　Beacon⁷ - Relatively⁸ low-power carrier transmitted by a satellite, allowing the controlling engineers on Earth to monitor telemetry data or track the satellite.

　　Beamwidth - The angle or conical shape of the beam that the antenna⁹ projects. Since larger antennas¹⁰ have narrower beamwidths, they can pinpoint¹¹ satellites in space or in dense¹² traffic areas on the earth with more precision.

　　Bell 103 - This is an AT&T specification¹³ for a modem¹⁴ at speeds of up to 300 bps (bits per second). This is the most common standard for modems¹⁵ in PCs.

　　Bell 201 - The AT&T standard for 2400 bps modems.

　　Bell 202 - The AT&T standard for 1800 bps modems.

　　Bell 208 - The AT&T standard for 4800 bps modems.

　　Bell 209 - The AT&T standard for 9800 bps modems.

　　Bipropellant - Propellants are the fuel used in satellite propulsion systems. Bipropellant means that two fuels are used.

　　BISYNC - This refers to bisynchronous transmission.

1 scrambling   

v.快速爬行( scramble的现在分词 )；攀登；争夺；（军事飞机）紧急起飞

参考例句：

• Scrambling up her hair, she darted out of the house. 她匆忙扎起头发，冲出房去。 来自《现代英汉综合大词典》
• She is scrambling eggs. 她正在炒蛋。 来自《简明英汉词典》

2 synchronizing   

v.同步，整步adj.同步的

参考例句：

• How to monitoring synchronizing error, and using 80196KC to control exciter. 以及同步电动机失步检测及以80196KC进行控制的方法。 来自互联网
• A synchronizing labyrinth must be created at a special, predetermined place. 同步迷宫必须建立在一个特殊的，预先确定的地方。 来自互联网

3 authorization   

n.授权，委任状

参考例句：

• Anglers are required to obtain prior authorization from the park keeper.垂钓者必须事先得到公园管理者的许可。
• You cannot take a day off without authorization.未经批准你不得休假。

4 backlog   

n.积压未办之事

参考例句：

• It will take a month to clear the backlog of work.要花一个月的时间才能清理完积压的工作。
• Investment is needed to reduce the backlog of repairs.需要投资来減轻积压的维修工作。

5 penetrating   

adj.（声音）响亮的，尖锐的adj.（气味）刺激的adj.（思想）敏锐的，有洞察力的

参考例句：

• He had an extraordinarily penetrating gaze. 他的目光有股异乎寻常的洞察力。
• He examined the man with a penetrating gaze. 他以锐利的目光仔细观察了那个人。

6 acronym   

n.首字母简略词，简称

参考例句：

• That's a mouthful of an acronym for a very simple technology.对于一项非常简单的技术来说，这是一个很绕口的缩写词。
• TSDF is an acronym for Treatment, Storage and Disposal Facilities.TSDF是处理，储存和处置设施的一个缩写。

7 beacon   

n.烽火，（警告用的）闪火灯，灯塔

参考例句：

• The blink of beacon could be seen for miles.灯塔的光亮在数英里之外都能看见。
• The only light over the deep black sea was the blink shone from the beacon.黑黢黢的海面上唯一的光明就只有灯塔上闪现的亮光了。

8 relatively   

adv.比较...地，相对地

参考例句：

• The rabbit is a relatively recent introduction in Australia.兔子是相对较新引入澳大利亚的物种。
• The operation was relatively painless.手术相对来说不痛。

9 antenna   

n.触角，触须；天线

参考例句：

• The workman fixed the antenna to the roof of the house.工人把天线固定在房顶上。
• In our village, there is an antenna on every roof for receiving TV signals.在我们村里，每家房顶上都有天线接收电视信号。

10 antennas   

[生] 触角，触须（antenna的复数形式）

参考例句：

• Marconi tied several antennas to kites. 马可尼在风筝上系了几根天线。 来自超越目标英语 第3册
• Radio astronomy today is armed with the largest antennas in the world. 射电天文学拥有世界上最大的天线。

11 pinpoint   

vt.准确地确定；用针标出…的精确位置

参考例句：

• It is difficult to pinpoint when water problems of the modern age began.很难准确地指出，现代用水的问题是什么时候出现的。
• I could pinpoint his precise location on a map.我能在地图上指明他的准确位置。

12 dense   

a.密集的，稠密的，浓密的；密度大的

参考例句：

• The general ambushed his troops in the dense woods. 将军把部队埋伏在浓密的树林里。
• The path was completely covered by the dense foliage. 小路被树叶厚厚地盖了一层。

13 specification   

n.详述；[常pl.]规格，说明书，规范

参考例句：

• I want to know his specification of details.我想知道他对细节的详述。
• Examination confirmed that the quality of the products was up to specification.经检查，产品质量合格。

14 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。

15 modems   

n.调制解调器( modem的名词复数 )

参考例句：

• Yes, floppy day, as did 9600 baud dial up modems. 是的，当时软件是最主要的工具，还有9600波特拨号调制解调器。 来自互联网
• Extra settings for configuring BAD modems that cannot identify proper disconnect tone. 额外的设置，配置不好的调制解调器不能确定适当的断开的语调。 来自互联网