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| 气柱 | |||
| gas column: 29 phrases in 10 subjects |
| Chemistry | 1 |
| Earth sciences | 1 |
| Electronics | 2 |
| Engineering geology | 1 |
| Geology | 1 |
| Oil / petroleum | 4 |
| Polymers | 1 |
| Technology | 15 |
| Water resources | 2 |
| Wind Energy | 1 |
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