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| 能量转换; 能量转化 | |||
| conversion of energy: 12 phrases in 9 subjects |
| Agriculture | 2 |
| Aviation | 2 |
| Earth sciences | 1 |
| Ecology | 1 |
| Economy | 1 |
| Environment | 1 |
| General | 1 |
| Technology | 2 |
| Water resources | 1 |
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