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useful volume | |||
effective volume | |||
active volume | |||
available volume; significant volume | |||
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effective volume |
有效体积 : 20 phrases in 10 subjects |
Aviation | 1 |
Drilling | 1 |
Engineering geology | 1 |
Mining | 1 |
Nuclear and fusion power | 1 |
Oil / petroleum | 5 |
Polymers | 2 |
Space | 3 |
Technology | 4 |
Textile industry | 1 |