Holek霍莱克holen.洞；孔；穴；漏洞；困境v.挖洞；掘坑；进洞hole opening ratio开孔率hole-down packer悬吊式堵塞器hole concentration空穴浓度hole boring machine镗孔机hole punched device冲孔装置hole position error孔位误差hole dilating drill扩孔钻头hole enlargement of扩孔Hole in the tree LT目录树洞holeless centrifuge天孔离心机