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Needle Telegraph

1、针式电报机

... 针式记录仪：stylus recorder 针式电报机：needle telegraph 针-平面[火花]隙：needle-plate gap ...

2、针示电报机

... needle tapestry 机绣仿挂毯织物 needle telegraph 针示电报机 needle thrust bearing 滚针推力轴承 ...

needle e telegraph针示电报机

double needle telegraph翻译;双针电报

single needle telegraph set单针电报机

电子、通信与自动控制技术

经济学

机械工程

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