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| 地面上可调桨距的螺桨 | |||
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adjustable propeller : 18 phrases in 8 subjects |
| Aviation | 2 |
| Chemistry | 1 |
| Electric machinery | 1 |
| Hydroelectric power stations | 1 |
| Nautical | 2 |
| Shipbuilding | 4 |
| Technology | 6 |
| Wind Energy | 1 |
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