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渗气 : 76 phrases in 12 subjects |
| Aviation | 1 |
| Chemistry | 1 |
| Construction | 2 |
| Electronics | 3 |
| General | 26 |
| Geology | 2 |
| Metallurgy | 3 |
| Nautical | 1 |
| Oil / petroleum | 3 |
| Oil and gas | 1 |
| Oil processing plants | 6 |
| Technology | 27 |
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