深小孔钻削
Small-deep holes drilling
小孔径深孔管板
tube sheet with small hole diameter
小孔径钻孔检测
small drilling hole detection
小直径深孔
Small-diameter deep holes
small-deep hole
高阶段大直径深孔采矿
large diameter deep hole mining of high stage
高阶段大直径深孔采矿法
high sublevel
large diameter and long hole stoping method
数控高效深孔镗床
CNC deep hole boring machine
多头小直径深层搅拌防渗墙施工工法
construction method of multi-headed and small-radi
Construction Method of Multi-headed and Small-radius Deep Stir
多头小直径深层搅拌桩
multi-drill small-diameter deep-layer mixing pile
小径深孔
Small Diameter and Deep Hole
小径系统
the national trails system
小孔孔径
the aperture of the small hole wafer
超长大直径钻孔灌注
super long-large diameter bored pile
extra-long and large drilling pouring
超长大直径钻孔灌注桩
super long-large diameter bored pile
大直径深孔
large diameter longhole
big-deep holes
big-diameter deep-hole
deep-hole with large diameter