电信专业英英词典D-1

 

　　DAMA - Stands for Demand-Assigned Multiple Access. This is a way to instantaneously assign telephony channels in a transponder according to the immediate¹ traffic demands.

　　Dash - This is the the character "-".

　　Data - This term typically refers to anything that is not a voice, and it is, according to AT&T, "a representation of facts, concepts or instructions in a formalized manner, suitable for communication, interpretation² or processing."

　　Database - This term refers to a collection of data that is catalogued in a logical way to ensure quick and reliable access.

　　Data Carrier Detect (DCD) - This is a hardware signal that indicates when a modem³ is online and capable of transmission.

　　Data Communications Equipment (DCE) - This is a device that translates a digital signal from data terminal equipment (DTE) into a form acceptable to the receiving device.

　　Data Compression - This is when data file size is reduced by elimination⁴ unnecessary information.

　　Data Grade Circuit - This is a circuit, such as a phone line, that is capable and suitable for transmitting data.

　　Data Link - This term describes communications paths that are used for data transmissions.

　　Data Set - (1) According to AT&T a data set is modem, but (2) according to IBM, a data set is a collection of data.

　　Data Set Ready (DSR) - This is a control signal that says that says a modem is ready to begin initial stages of transmission (i.e., configuration⁵).

　　Data Terminal Equipment (DTE) - This is equipment that only receives information (i.e., no transmission), such as a printer.

　　Data Terminal Ready (DTR) - This is another control signal that says that modems⁶ have completed their initial configuration session and are ready for transmission.

　　DBS - This stands for Direct Broadcast Satellite, and refers to service that uses satellites to broadcast multiple channels of television programming to home mounted small-dish antennas⁸, such as those provided by DirecTV or Dish Network.

　　dBi - The dB power relative to an isotropic source.

　　dBW - The ratio of the power to one Watt⁹; it is expressed in decibels¹¹.

　　DCD - see Data Carrier Detect.

　　DCE - see Data Communications Equipment.

　　Decibel¹⁰ (dB) - The standard unit used to express the ratio of two power levels. In the communications field, It is used to express either a gain or loss in power after the signal has traveled between the input¹² and output devices.

　　Declination - The offset¹³ angle of an antenna⁷ from the axis¹⁴ of its polar mount.

　　Decoder - Also called a receiver, this is a television-top device that converts an electronically scrambled¹⁵ television picture into a signal viewable on the TV.

　　Deemphasis - Reinstatement of a uniform baseband frequency response following demodulation.

　　Default - This is the factory setting or configuration of software or hardware.

1 immediate   

adj.立即的；直接的，最接近的；紧靠的

参考例句：

• His immediate neighbours felt it their duty to call.他的近邻认为他们有责任去拜访。
• We declared ourselves for the immediate convocation of the meeting.我们主张立即召开这个会议。

2 interpretation   

n.解释，说明，描述；艺术处理

参考例句：

• His statement admits of one interpretation only.他的话只有一种解释。
• Analysis and interpretation is a very personal thing.分析与说明是个很主观的事情。

3 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。

4 elimination   

n.排除，消除，消灭

参考例句：

• Their elimination from the competition was a great surprise.他们在比赛中遭到淘汰是个很大的意外。
• I was eliminated from the 400 metres in the semi-finals.我在400米半决赛中被淘汰。

5 configuration   

n.结构，布局，形态，(计算机)配置

参考例句：

• Geographers study the configuration of the mountains.地理学家研究山脉的地形轮廓。
• Prices range from $119 to $199,depending on the particular configuration.价格因具体配置而异，从119美元至199美元不等。

6 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

7 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。

8 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。

9 watt   

n.瓦，瓦特

参考例句：

• The invention of the engine is creditable to Watt.发动机的发明归功于瓦特。
• The unit of power is watt.功率的单位是瓦特。

10 decibel   

n.分贝(音量的单位)

参考例句：

• The noise pollution reached a high decibel level.噪音污染达到了很高分贝。
• In sound we use the decibel scale.在声学中我们采用分贝标度。

11 decibels   

n.分贝( decibel的名词复数 )

参考例句：

• The typical lawn mower makes about 90 decibels of noise. 典型的割草机发出的声响约为90分贝。 来自《简明英汉词典》
• A normal conversation reaches 55 decibels. 普通的谈话即可达55分贝。 来自《简明英汉词典》

12 input   

n.输入(物)；投入；vt.把(数据等)输入计算机

参考例句：

• I will forever be grateful for his considerable input.我将永远感激他的大量投入。
• All this information had to be input onto the computer.所有这些信息都必须输入计算机。

13 offset   

n.分支，补偿；v.抵消，补偿

参考例句：

• Their wage increases would be offset by higher prices.他们增加的工资会被物价上涨所抵消。
• He put up his prices to offset the increased cost of materials.他提高了售价以补偿材料成本的增加。

14 axis   

n.轴，轴线，中心线；坐标轴，基准线

参考例句：

• The earth's axis is the line between the North and South Poles.地轴是南北极之间的线。
• The axis of a circle is its diameter.圆的轴线是其直径。

15 scrambled   

v.快速爬行( scramble的过去式和过去分词 )；攀登；争夺；（军事飞机）紧急起飞

参考例句：

• Each scrambled for the football at the football ground. 足球场上你争我夺。 来自《现代汉英综合大词典》
• He scrambled awkwardly to his feet. 他笨拙地爬起身来。 来自《简明英汉词典》