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air supply duct
archit. 供气管
compr. 供气管道
met. 供风道; 送风管
tech. 送风管 (道); 送风道; 供气管 (道); 供气道
air supply duct: 8 phrases in 5 subjects
Architecture1
Aviation2
Hydroelectric power stations1
Refrigeration2
Technology2

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