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Terms containing
Frequency Control Board
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Subject
English
Chinese
commun., railw.
dispatching telephone control board with Voice Frequency
VF
selective calling
音选调度电话总机
mil., air.def.
frequency control board
频率管理委员会
gen.
Frequency Control Board
频率管制委员会
commun., railw.
party-line telephone control board with Voice Frequency
VF
selective calling
音选同线电话总机
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