combin gateway and pillar with fully mechanized to
pre-cut top medium-length hole pillar method
a circular hole with two cracks
blasting hole with water
Broaching Spline Hole with Lathes
composite material plate with hole
hemispherical liner with hole
horizontal hole with large-diameter
rectangular plate with hole
reversed pendulum hole with bimetal mark
Single hole with single initiation
slug the hole with viscous mud
dissolve with heat,flow with the same temperature,elute with warm water