four jaw large hole chuck  大通孔四爪单动卡盘

large hole diameter  大破孔

large hole distributing plate  大孔分布板

Large Hole Distributional Plate  大孔分布板

large hole formation  大孔道地层

Large Hole Spacing  大孔距爆破

Large-hole  大孔径

large-hole drill hole  大直径钻孔

Large-hole Drilling  大口径钻探

vessel subject to internal pressure with large hole  内压开孔容器

deep-hole with large diameter  大直径深孔

horizontal hole with large-diameter  大直径水平孔

large deep hole bench blasting  大区深孔台阶爆破

large deep-hole blasting  深孔大爆破

Large Diameter Deep Hole Blasting  大直径深孔爆破

large diameter deep hole mining of high stage  高阶段大直径深孔采矿

Large diameter long-hole drilling  大直径深孔凿岩

large diameter threaded hole  大螺孔

large-diameter deep hole  大孔径深孔