电信专业英英词典A-3

　　AT Command - This is the character "@" and usually means "at".

　　AT&T - American Telegraph and Telephone, the inventors of the first modem¹.

　　Attended Mode - This is the mode in which two or more users manually enter commands to send or receive files.

　　Attenuation² - The phenomenon that is the loss in the power of electromagnetic signals between their transmission and receiving points.

　　Audio Monitor - This is a speaker that is part of the modem and allows you to hear sound on the phone line.

　　Auto³ Answer - This is when a modem, phone, or other device has the capability⁴ to automatically set up a connection with an incoming transmission.

　　Auto Baud - The ability of a modem to adapt its communication rate if the computer it is communicating with is unable to connect at the requested speed.

　　Auto Dial - When a phone or other device allows the dialing a one or a few numbers to cause the dialing of a long string of numbers.

　　Auto Redial - When a phone or modem redials a number if it encounters a busy signal the first time around.

　　Auto Reply - To send a message immediately upon the reception of one.

　　Automatic Frequency Control (AFC) - A circuit that can automatically control a signal's frequency.

　　Automatic Gain Control (AGC) - A circuit that automatically governs the gain of an amplifier so that the output signal level remains⁵ essentially⁶ constant (even if there are varying input⁷ signal levels).

　　AZ/EL Mount - This is an adjustable⁸ antenna⁹ mount.

　　Azimuth - Generally, this is the angular distance along the horizon to the location of the object (measured in degrees). By convention, azimuth is measured from north, rotating towards the east, along the horizon. Regarding satellites specifically, it is the horizontal angle of rotation¹⁰ that a parabolic antenna located on the ground must be rotated through to point towards a specific satellite in space.

1 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。

2 attenuation   

n.变薄；弄细；稀薄化；减少

参考例句：

• The attenuation distance and transmittance are connected together, they influence each other. 衰减距离attenuation)和能见度(transmittance)是联系在一起的，并相互影响。 来自互联网
• Attenuation of light is in the form of absorption. 光是以吸收的形式衰减。 来自辞典例句

3 auto   

n.(=automobile)(口语)汽车

参考例句：

• Don't park your auto here.别把你的汽车停在这儿。
• The auto industry has brought many people to Detroit.汽车工业把许多人吸引到了底特律。

4 capability   

n.能力；才能；(pl)可发展的能力或特性等

参考例句：

• She has the capability to become a very fine actress.她有潜力成为杰出演员。
• Organizing a whole department is beyond his capability.组织整个部门是他能力以外的事。

5 remains   

n.剩余物，残留物；遗体，遗迹

参考例句：

• He ate the remains of food hungrily.他狼吞虎咽地吃剩余的食物。
• The remains of the meal were fed to the dog.残羹剩饭喂狗了。

6 essentially   

adv.本质上，实质上，基本上

参考例句：

• Really great men are essentially modest.真正的伟人大都很谦虚。
• She is an essentially selfish person.她本质上是个自私自利的人。

7 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。

8 adjustable   

adj.可调整的，可校准的

参考例句：

• More expensive cameras have adjustable focusing.比较贵的照相机有可调焦距。
• The chair has the virtue of being adjustable.这种椅子具有可调节的优点。

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 rotation   

n.旋转；循环，轮流

参考例句：

• Crop rotation helps prevent soil erosion.农作物轮作有助于防止水土流失。
• The workers in this workshop do day and night shifts in weekly rotation.这个车间的工人上白班和上夜班每周轮换一次。