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| 电力池动力装置如燃料电池，太阳能电池，蓄电池等 | |||
| 电火箭发动机 | |||
| 电机 | |||
| electric engine: 24 phrases in 7 subjects |
| Automobiles | 4 |
| Aviation | 3 |
| Drilling | 1 |
| Electric machinery | 1 |
| Nautical | 2 |
| Space | 4 |
| Technology | 9 |
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