By the time he was12 he was a telegrapher and everlastingly trying to make that system of communication work better .

到他12岁时，他 当 上了 报务员，他坚持不懈地努力尝试改进这种通信系统。

He gave him lessons four days a week after the station had closed for the night and in three weeks Edison was a better telegrapher than his teacher .

他在车站夜晚关门后，每周给他上四次课，三个星期之后爱迪生便成为比他老师更好的 电报 员了。

This method needs not decouple the telegrapher 's equations for multiconductor transmission lines and is also suitable to nonuniform coupled transmission lines .

该方法对于耦合传输线 无须进行解耦，在 处理非均匀 频 变传输线 时也非常方便。

An Efficient Transient Analysis Method for General Transmission Lines Based on the Time Space Discretization of Telegrapher Equations

传输线瞬态分析中基于 电报方程 时 -空离散的有效方法