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 immediate 1 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, interpretation 2 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 modem 3 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 elimination 4 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., configuration 5).
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 modems 6 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 antennas 8, 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 Watt 9; it is expressed in decibels 11.
DCD - see Data Carrier Detect.
DCE - see Data Communications Equipment.
Decibel 10 (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 input 12 and output devices.
Declination - The offset 13 angle of an antenna 7 from the axis 14 of its polar mount.
Decoder - Also called a receiver, this is a television-top device that converts an electronically scrambled 15 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.
- 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。
- 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。
- 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。
- 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。
- 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。
- 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
- 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。
- 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。
- 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。
- 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。
- 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》
- 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。
- 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。
- 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。