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热风管 rèfēngguǎn
met. hot-blast main
tech. hot-air duct (道); warm-air duct (道); warm-air ducting (道)
热风管
: 41 phrases in 9 subjects
Agriculture1
Architecture2
Automobiles1
Aviation1
Metallurgy22
Rail transport1
Refrigeration4
Steel production1
Technology8