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| 逆绞钢丝绳 | |||
| 逆捻钢丝绳 | |||
| 正搓绳; 交叉捻钢丝绳; 普通捻钢丝绳 | |||
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regular lay rope : 3 phrases in 1 subject |
| Metallurgy | 3 |
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