telephone engineering

Telephone operators joined the strike and four million engineering workers are also planning action.

电话接线员加入了罢工的行列，400万工程技术工人也在计划采取行动。

Code for design of cable telephone communication system engineering in port areas

港口地区有线电话通信系统工程设计规范

Technical code for SPC digital telephone switching engineering design of railway

铁路时分数字程控交换设备技术规范

Telephone operators joined the strike and four million engineering workers are also planning action

电话接线员加入了罢工的行列，400万工程技术工人也在计划采取行动。

Decibel one phrase is applied to telephone engineering first in 1924 beginning of years in.

分贝一词于1924年首先被应用到电话工程中.

Specification for engineering design of dispatch telephone and conference telephone in industrial enterprises

工业企业调度电话和会议电话工程设计规范

This paper analyses the traffic characteristics of telephone system by traffic simulation, and compares them with the theory of telephone traffic engineering.

本文用话务模拟的方法分析了电话系统的话务问题，并与电话话务理论的结果进行了比较。