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| 脱气 | |||
| 除气 | |||
| out gas: 20 phrases in 8 subjects |
| Armored vehicles | 2 |
| Automobiles | 2 |
| Drilling | 1 |
| Electric machinery | 1 |
| General | 1 |
| Metallurgy | 3 |
| Oil / petroleum | 3 |
| Technology | 7 |
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