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| counter-rotation | |||
| retrograde rotation | |||
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逆向旋转 : 9 phrases in 8 subjects |
| Automobiles | 1 |
| Chemistry | 1 |
| Electric machinery | 1 |
| Electronics | 2 |
| Metallurgy | 1 |
| Shipbuilding | 1 |
| Space | 1 |
| Technology | 1 |
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