Formation of Strowger Automatic Telephone Exchange.

史端乔式自动电话交换机形成。

Maybe a telephone exchange or some kind of social identification.

或许是电话号码或某种社会编码。

An operator wearing earphone was sitting in the telephone exchange.

戴耳机的接线员正坐在总机室里。

The nervous system of the body bears some analogy to a telephone exchange.

人体的神经系统与电话局有某些相似之处。

By 1878, Bell had set up the first telephone exchange in New Haven, Connecticut.

在1878年，贝尔已经在康涅狄格州的新海文建立了第一个电话交换站。