- paging loud speaker system
- n.传呼扬声器系统
English-Chinese dictionary of mining (英汉矿业大词典). 2013.
paging loud speaker system
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Tone remote — General Electric Mobile Radio, unknown year). This GE manual covers tone and DC remotes. ] [To confirm the use of the phrase tone remote as accurate in describing this type of device, please see US Patent and Trademark Office patent ID 6950653,… … Wikipedia
