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自由表面
avia. free-surface
el., sec.sys. free surface
eng.geol. exposed surface
海的自由表面
tech. available surface
自 由 表面: 17 phrases in 8 subjects
Drilling1
Electronics2
Explosives and Explosive Ordnance Disposal1
Geophysics2
Metallurgy2
Oil / petroleum2
Polymers1
Technology6