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protected frequency
军队, 后勤	захищена частота
英语 词库
protected frequency
军队, 后勤	A frequency on which, upon order, there must be no friendly jamming. (FRA)
protected frequencies
美国	Friendly, generally time-oriented, frequencies used for a particular operation, identified and protected to prevent them from being inadvertently jammed by friendly forces while active electronic warfare operations are directed against hostile forces (JP 3-13.1) 亦见 electronic warfare