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| residual gas (体) | |||
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剩余 气 : 27 phrases in 7 subjects |
| Automobiles | 1 |
| Aviation | 2 |
| Chemistry | 1 |
| Metallurgy | 2 |
| Oil / petroleum | 3 |
| Superconductivity | 2 |
| Technology | 16 |
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