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电子管检波器
gen. vacuum thermionic detector
radio vacuum tube detector
tech. transrectifier; vacuum-tube detector; valve detector
电子管阳极检波器
mil., air.def. transrectifier
电子管〔阳极,板极〕检波器
gen. transrectifier
电子管 检波器: 2 phrases in 2 subjects
Air defense1
General1