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air supply system
archit. 送风系统设备
el. 供气系统
met. 供风系统
space 气源系统
tech. 送风设备; 送风系统; 恒压通风
air supply system: 20 phrases in 7 subjects
Automobiles1
Aviation4
Electronics4
Hydroelectric power stations1
Metallurgy1
Space2
Technology7