载波电报
- 网络telegraphy;carrier telegraphy,carrier current telegraph;carrier telegraphy;carrier telegraph
载波电报-
音频载波电报测试仪
Voice carrier telegraph testing equipment
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音频载波电报终端机
Voice-frequency carrier telegraph terminal
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载波滤波器，有线电报或电话系统用
Filter , carrier-current , for line telegraphic or telephonic systems
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在特殊条件下，带通滤波器也可以用作低通滤波器或高通滤波器。载波滤波器，有线电报或电话系统用
Under special conditions a BPF may also be used as an LPF or as an HPF . filter , carrier-current , for line telegraphic or telephonic systems