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| 21. | vacuum pump adapter |
| 真空泵接头 |
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| 22. | bridge rail joint |
| 桥式钢轨接头|活动桥钢轨接头 |
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| 23. | FROM THE TCM LINK CONNECTOR TO THE RELAY CONNECTOR |
| 从ＴＣＭ连接接头到继电器接头。 |
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| 24. | a tee piece |
| 丁字接头 |
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| 25. | Copper tube joints-Reducers |
| GB/T11618.6-1989铜管接头异径接头 |
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| 26. | upset end joint |
| 加厚接头 |
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| 27. | union connection |
| 管子接头 |
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| 28. | bell-and-plain end joint |
| 套管接头 |
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| 29. | track connector |
| 履带接头 |
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| 30. | grass hopper joint |
| 滑动接头 |
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