[telegraphkey]telegraph电脑下载

The Simens Limited liability company#39s predecessor was in 1847 founds in Berlin#39s Simens the Halse gram telegraph manufacture company in 1897 this company changed the Jointstock company， in 1966 named。

key station主控台， 控制站， 中心站， 基本观测站knapsack station轻便台laminar flow station垂直或水平层流箱净化台land station地面电台， 地面站land mobile station地面流动电台landing station降落场lifesaving station救生站。