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Machine Telegraphy

1、机械式电报

...line telegraphy 有线电报machine telegraphy 机械式电报manual telegraphy 人工电报; 手抄电报 ...

wireless telegraphy machine无线电报机

aerograph wireless telegraphy machine无线电报机

wirele telegraphy machine无线电报机

wireless s telegraphy machine无线电报机

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