1.dragon born dragon, chicken born chicken, mouse'''' son can make hole!
龙生龙，凤生凤，老鼠的儿子大地洞
2.Dragon born dragon, phoenix born phoenix, mouse son can make hole! !
龙生龙，凤生凤，老鼠儿子会打洞。
3.Dragon born dragon, chicken born chicken, and mouse's son can make hole!
龙生龙，凤生凤，老鼠生儿打地动！
4.2, dragon born dragon, chicken born chicken, mouse' son can make hole! !
龙生龙，鸡生鸡，老鼠的儿子可以洞！
5.Technical Measure for Make Hole with Impact in Reinforced Concrete Piles
在原钢筋混凝土灌注桩中冲孔施工技术措施
6.The study and application of make hole by large hole size deep hole fixing rock peg
大孔径深孔嵌岩桩成孔工艺的研究及应用