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air ventilation
tech. 通风量; 空气通风
wind. 通风; 换气
air ventilation: 37 phrases in 17 subjects
Automobiles4
Aviation2
Communications1
Consulting1
Ecology1
Electronics1
Exhibitions1
Hydroelectric power stations2
Nautical2
Nuclear and fusion power1
Rail transport4
Refrigeration3
Solar power1
Space2
Steel production1
Technology8
Wind Energy2

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