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| extraction system | |||
| traction system | |||
| propulsion system | |||
| drag type system | |||
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牵引 系统 : 46 phrases in 6 subjects |
| Automobiles | 26 |
| Aviation | 1 |
| Plastics | 1 |
| Rail transport | 5 |
| Space | 1 |
| Technology | 12 |
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