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| 21. | double spring bottom oil ca |
| 复簧底油壶 |
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| 22. | double bottom bracket floor |
| 双层底空心肋板 |
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| 23. | double bottom open floor |
| 双层底组合肋板 |
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| 24. | Transf.100 t of ballast water from Port no.1 to STBD No.2 double bottom. |
| 将左舷1号舱的100t压载水驳到右舷2号双层舱。 |
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| 25. | double-bottom trailer combination |
| 双联拖车 |
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| 26. | double bottom under engines and boilers |
| 机、炉舱双层底机炉舱双层底 |
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| 27. | double bottom tank top plating |
| 双层底内底板 |
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| 28. | Cellular double bottom to be constructed under cargo holds and engine room. |
| 在货舱和机舱下建造格状双层底。 |
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| 29. | crown of a double bottom |
| 双层底舱顶 |
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| 30. | It is remarkable that its bottom is of double plating, it's side shell of triple plating, and lap joints |
| 底部为二重板,舷侧为三重板,而且是搭接与平接结合使用。 |
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