The ditch digger went back to his hole. His friend asked, " What did he say? "
挖沟人回到沟里. 他的朋友便问: “ 他怎么说? ”
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计算分析了挖沟机在受到牵引力、海流力、土壤阻力等多种载荷作用下的可靠性。
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Compute and analysis of groundwork bearing capacity for jet underwater ditch digger
喷射式水下挖沟机地基承载力计算分析
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Design of a Bionic Ditch Digger Study on the Technology Laying Drain Pipe With Pad
仿生式开沟机设计理论的研究排水管垫块法施工技术研讨
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