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gas mass
avia. 气体质量
gas mass: 131 phrases in 21 subjects
Agriculture1
Animal husbandry6
Automobiles3
Aviation2
Biotechnology1
Chemistry3
Earth sciences24
Ecology1
Electronics8
Explosives and Explosive Ordnance Disposal1
Geology14
Laboratory equipment1
Metallurgy1
Oil / petroleum7
Oil processing plants1
Perfume1
Physics1
Polymers4
Space7
Technology26
Water resources18