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air-free ['εəfriː, 'εr-]
gen. 抽了空气的; 被抽真空的
el. 空气稀薄的
met. 真空的
space 无空气的
air free
tech. 无空气的
air-free: 135 phrases in 25 subjects
Automobiles2
Aviation7
Business2
Communications1
Compressors6
Construction2
Corporate governance1
Earth sciences4
Ecology2
Economy1
Electronics1
Engineering geology1
Explosives and Explosive Ordnance Disposal3
General10
Geophysics1
Hydroelectric power stations1
Metallurgy4
Oil / petroleum7
Refrigeration2
Shipbuilding2
Space10
Surgery1
Technology54
Textile industry2
Wind Energy8

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