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弹簧回位 : 37 phrases in 9 subjects |
| Agriculture | 1 |
| Automobiles | 24 |
| Aviation | 1 |
| Construction | 1 |
| Drilling | 1 |
| Information technology | 1 |
| Oil / petroleum | 1 |
| Racing and motorsport | 1 |
| Technology | 6 |
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