telephone exchange
短语[电] 电话交换机
发音
词形变化
释义与例句
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1.
Any equipment that establishes connections between telephones.
媒体 工程 -
2.
The rooms or building housing such equipment (a central office, as it was termed by the Bell System).
历史 媒体 工程 -
3.
A local or locoregional network of such switched connections, of which a central office was the hub; the local company formed to create and maintain this network and its central office.
历史 媒体 工程This valley didn't have a telephone exchange until 1903, when the leading citizens of this town invested in a company to establish one.
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4.
The portion of a telephone number representing that network, among the other networks of the larger system: the central office code. In the North American Numbering Plan, this is the "555" portion of "+1-212-555-6789".
媒体 工程Holonyms: telephone number, phone number
A: You can telephone him at 2719. B: What's the [telephone] exchange? A: LA6. I'm sorry, that's LA6-2719.