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| 21. | waterproof lap pad |
| 防水衬褥 |
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| 22. | lap waste opener |
| 皮辊花机 |
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| 23. | single welded lap |
| 单面焊搭接 |
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| 24. | double lap joint |
| 双搭接接头 |
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| 25. | interpass cold lap |
| 焊道内冷搭接 |
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| 26. | telescopic lap splice |
| 套接接头 |
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| 27. | rivet lap joint |
| 铆合互搭接头 |
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| 28. | automatic lap counter |
| 自动游程记趟器 |
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| 29. | automatic lap former |
| 自动成卷装置 |
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| 30. | picker lap scale |
| 清棉棉卷秤 |
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