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| 螺旋弹簧螺旋数; 弹簧圈数 | |||
| 弹簧圈数 | |||
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| 叠层层数 | |||
| 线圈数 | |||
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number of coils : 16 phrases in 5 subjects |
| Automobiles | 3 |
| Electric machinery | 10 |
| Metallurgy | 1 |
| Space | 1 |
| Technology | 1 |
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