使用碳粒送话器之电话机  carbon telephone

送话器碳粉  carbon powder for telephone transmitter

使用炭粒送话器的电话机  Telephone; Carbon

电话送话器  telephone transmitter

无线电话送话器  radio telephone transmitter

碳精送话器  carbon transmitter

戴维尔式送话器  delville transmitter

电磁式送话器  magneto microphone

电磁送话器  magnetophone

电话送话机  telephone transmitter

电容器式送话器  condenser transmitter

电容送话器  condenser transmitter

高阻式送话器  high resistance transmitter

喉头送话器  necl tilephone; laryngophone; throaty microphone; neck telephone

喉头送话器喉式话筒  throat microphone

静电送话器  condenser transmitter

抗躁声送话器  antinoise microphone

热线式送话器  hot-wire microphone

室内送话器  booth microphone