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active mass; chemical mass; effective mass | |||
apparent mass; virtual mass | |||
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active mass |
有效 质量 : 37 phrases in 10 subjects |
Agriculture | 1 |
Automobiles | 6 |
Aviation | 2 |
Electronics | 5 |
Explosives and Explosive Ordnance Disposal | 1 |
Metallurgy | 3 |
Oil / petroleum | 1 |
Shipbuilding | 1 |
Space | 7 |
Technology | 10 |