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| 水力发电的 | |||
| 电动控-液压的 | |||
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hydro-electric : 30 phrases in 8 subjects |
| Agriculture | 3 |
| Aviation | 3 |
| Earth sciences | 8 |
| Electronics | 2 |
| Explosives and Explosive Ordnance Disposal | 1 |
| General | 1 |
| Metallurgy | 1 |
| Technology | 11 |
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