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| 能量守恒与转化定律 | |||
| 能量不灭定律 | |||
| 能量守恒定律 | |||
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law of conservation of energy : 8 phrases in 5 subjects |
| Aviation | 1 |
| Chemistry | 1 |
| Electric machinery | 1 |
| Technology | 3 |
| Wind Energy | 2 |
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