电话线路

• telephone line
• voice grade channel
• telephone circuit

参考释义

电话线路

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例句

1. 一条电报线路或电话线路对另一条电报线路或电话线路的干扰。
   Interference from one telegraph circuit to another telegraph circuit or into telephone circuits.
2. 我们公司有二十条电话线路。
   Our firm has twenty lines.
3. 在租用的电话线路上增加设备以改善数据传输线路的特性。
   The addition of equipment to a leased telephone line to improve its data-handling characteristics.