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| 挥发性碳氢化合物 | |||
| 挥发性碳氢化物 | |||
| 挥发性 | |||
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volatile hydrocarbon : 13 phrases in 4 subjects |
| Earth sciences | 3 |
| Metallurgy | 1 |
| Technology | 7 |
| Water resources | 2 |
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