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回波损耗 huíbō sǔnhào
comp.	active return loss
el.	echo loss
space	return loss; echo return loss
回波反射波损耗
radio	return loss

回波损耗: 27 phrases in 9 subjects

Air defense	2
Aviation	1
Communications	1
Electronics	10
Geophysics	1
Information technology	2
Space	2
Technology	2
Telecommunications	6