Objective To discuss the operative method and effect of enlarge undercutting the laminae through the interspace of laminae for the treatment of simple lumbar vertebral canal stenosis.
目的探讨潜式扩大开窗术治疗单纯性腰椎管狭窄症的方法及疗效。
The method of culvert-undercutting with shallow overburden is adopted to construct Beijing Xisihuan underground culvert of South-to-north Transfer Project.
南水北调北京西四环暗涵施工中采用了浅埋暗涵施工法。
Studies of stress distribution during undercutting were carried out using Boundary Element Method for Tongkuangyu Copper Mine.
文章根据铜矿峪铜矿开采条件，运用边界元法进行了矿块崩落法拉底过程中应力分布规律的研究。
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