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| 钢板弹簧滑动弹簧 | |||
| 自由簧; 无约束游丝 | |||
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| 钟、表的无约束游丝 | |||
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free spring : 8 phrases in 3 subjects |
| Automobiles | 3 |
| General | 1 |
| Technology | 4 |
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