电信专业英英词典B-3（在线收听）

　　补充：

　　Backbone - A series of high-speed network connections through which other networks connect.

　　Bandwidth - According to Webster's: a range within a band of wavelengths, frequencies, or energies; esp: a range of radio frequencies which is occupied by a modulated carrier wave, which is assigned to a service, or over which a device can operate. In Internet terms, bandwidth commonly refers to the amount of information that can be sent through a connection.

　　Bit - (binary digit) The smallest unit of computer information.

　　Browser - A software program that allows you to view HTML documents and navigate on the WWW.

　　Business Systems - The set of voice, data, and Internet products that provide communication solutions and services to business customers. The products usually reside within the customer's place of business.

　　Byte - A combination of bits that represents a single character (approximately 8 bits equal one byte).