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回波脉冲 huíbō màichōng
agric. return pule
avia. pulse-echo
met. echo impulse; echo pulse
oil echo-pulse
space return pulse
回波〔回声〕脉冲
gen. echo-pulse
回波 脉冲: 25 phrases in 10 subjects
Air defense1
Aviation1
Earth sciences1
Electronics4
Metallurgy1
Oil / petroleum2
Plastics1
Space3
Technology8
Telecommunications3