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大吨位沉船整体打捞中打捞框架吊装下放技术
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Lifting and Lowering of Salvage Frame for Integral Salvage of Large Tonnage Wreck
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图15. 打捞框架吊架组装Solidworks设计模型[ |
Fig.15. Assembly design model of lifting beam of salvage frame by Solidworks[ |
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