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作用层
tech. active layer
作用层
: 102 phrases in 22 subjects
Agriculture2
Air defense1
Architecture2
Automobiles1
Desert science1
Drilling1
Earth sciences2
Economy1
Electronics3
Engineering geology5
Explosives and Explosive Ordnance Disposal1
General3
Genetics3
Geology2
Geophysics1
Hydroelectric power stations2
Metallurgy3
Oceanography & oceanology1
Oil / petroleum26
Refrigeration1
Technology39
Wind Energy1

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