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| 21. | jib head radius |
| 挖掘机酌半径 |
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| 22. | jib type loader |
| 转臂式装载机 |
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| 23. | insert jib section |
| 中间臂节 |
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| 24. | varied length jib |
| 可变长度起重臂 |
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| 25. | downstepped curved jib |
| 下向截槽弯曲截盘 |
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| 26. | derricking jib crane |
| 人字式转臂起重机 |
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| 27. | electric jib crane |
| 电动单臂起重机 |
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| 28. | jib tricing line |
| 首斜帆中部拦帆索 |
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| 29. | jib radius indicator |
| 悬臂伸距指示器 |
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| 30. | Shipbuilding-jib cranes |
| GB/T12932-1991船用臂架起重机 |
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