telephone trunk line的意思|示意
美 / /
英 / /
电话干线
telephone trunk line的网络常见释义
电话主线 ... 电话主叫 caller id 电话主线 mtl main telephone line; telephone trunk line 对话主端 primary end of a session ...
telephone trunk line相关例句
Increase the ability of correspond by letter, raise the telephone universality rate, take the area trunk line fiber optic cable and the city country telephone nets as the point.
增加通信能力，提高电话普及率，以区际干线光缆和城乡电话网为重点。