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排烟系统 páiyān xìtǒng
avia. purging system
hydroel.st. smoke evacuation system
met. exhaust system; fume exhaust system; fume extraction system
railw. smoke extraction system
tech. smoke exhaustion system
UN, econ. smoke exhaust system
排烟系统: 10 phrases in 7 subjects
Aviation1
Hydroelectric power stations2
Metallurgy1
Nuclear and fusion power2
Refrigeration1
Steel production1
Technology2