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试密度 包含空隙在内的干么重
phys. buoyant density; apparent density
试密度: 55 phrases in 20 subjects
Agriculture1
Aviation4
Bridge construction2
Business1
Chemistry1
Desert science2
Engineering geology3
Explosives and Explosive Ordnance Disposal1
General1
Mechanics1
Metallurgy2
Mining1
Oil / petroleum1
Plastics1
Shipbuilding1
Space2
Superconductivity1
Technology25
United States2
Water resources2