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radio relay
el. 无线中继站; 无线中继通信
space 无线电中继
telecom. 无线电接力
radio relay station
mil., air.def. 无线电中继
radio relay
: 66 phrases in 11 subjects
Air defense6
Aviation5
Communications5
Electronics17
General4
Information technology3
Nautical1
Shipbuilding1
Space8
Technology8
Telecommunications8