large-diameter hole drill 大口径钻孔
large-diameter-hole mining 大直径深孔采矿法
large-diameter hole-excavating pile 大直径挖孔桩
large-diameter hole presplitting blasting 大孔径预裂爆破
Cutting-carrying in large diameter hole 大井眼携岩
large hole diameter perforation 大直径炮眼
Large diameter long-hole drilling 大直径深孔凿岩
large diameter pile hole 大直径钻孔灌注桩
What we have done in this paper is of great significance in designing the heavy rock drill to drill deep and large diameter hole.
为大孔径深孔凿岩的重型液压凿岩机的研究与研发打下理论和实践基础。
Dig a hole, about twice as large as the diameter of the flower's pot.
挖一个洞，洞的大小约是花盆的直径的两倍大。
The applications of large diameter manual hole digging pile in different engineering geological conditions are discussed based upon design examples.
通过设计实例，从理论上探讨了大直径人工挖孔桩在建筑基础设计中的应用。
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