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| 空气螺旋桨 | |||
| 空气螺旋桨 | |||
| air screw: 16 phrases in 7 subjects |
| Automobiles | 4 |
| Compressors | 1 |
| Mechanics | 1 |
| Refrigeration | 1 |
| Shipbuilding | 1 |
| Technology | 4 |
| Wind Energy | 4 |
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