电信专业英英词典A-1

（单词翻译:单击）

　　Abort¹ - To stop doing something. Particularly, to exit a software program or stop receiving or sending a message.

　　Access - (1) (verb) to get use of something, or (2) (noun) refers to a particular level or security clearance² of use of something (i.e., one's "access" to the mainframe).

　　Account - A term that refers to information that a particular telecom system has about you, and typically refers to an ID number or your personal information.

　　ACK - A character transmitted by a receiver that acknowledges that some particular reception took place.

　　Acoustic³ Coupler - This is an acoustic modem⁴ that transfers data over phone lines by tones and sounds instead of electronically. Old-fashion handsets fit into a the modem to transmit information.

　　Acoustic Modem - This is simply a modem that uses an acoustic coupler.

　　Adaptive Dialing - A modem will try dialing with tones initially⁵ and will then dial in pulse if necessary (i.e., if tone dialing is ignored).

　　ADC - This stands for Analog-to-Digital Conversion⁶.

　　ADSL - This stands for Asymmetrical⁷ Digital Subscriber⁸ Line and is the typical DSL service that connects customers to the internet. Preexisting channels in telephone lines are used to transmit data to and from the net.

　　Alias⁹ - This is an assumed name with which bulletin board users may post messages.

　　Altitude - the distance an object appears to be above the horizon. This angle is measured up from the closest point on the horizon.

　　Ampersand - The character "&", which usually is written to signify "and".

　　Amplitude¹⁰ Modulation¹¹ (AM) - The signal carries the desired information content by varying the amplitude or height of the carrier wave.

　　Amplifier - A device that is used to boost the strength or intensity¹² of an electronic signal.