大区深孔台阶爆破
large deep hole bench blasting
台阶深孔爆破
terrace depth-hole blasting
step long-hole blasting
Long-hole bench blasting
borehole blasting
大直径深孔爆破
large diameter deep hole blasting
地下采矿深孔爆破
long holeundergound blasting
分层台阶深孔开采
sublevel long hole benching
井下深孔爆破
Underground Deep-hole Blasting
立井深孔爆破
Deep Blasting in Rock Shaft
露天深孔爆破
Deep-hole surface blasting
Open-pit longhole blasting
open-pit deep hole blasting
open-pit borehole blasting parameters
露天中深孔爆破
open pit middl-length hole blasting
扇形深孔爆破
deep-hole sector blasting
深孔爆破成井
shaft raise by deep hole blasting
中深孔爆破
medium-deep borehole blasting
moderate-long hole blasting
blasting of medium deep hole
open-pit Limestone deposit
medium and long hole blasting
medium to long hole blasting
Long-hole Blasting
medium-length-hole blasting
Medium-depth Hole Blasting
medium-deep hole blasting
mediumlong hole blasting
Medium-dength hole blasting
Mid-deep Hole Blasting
Medium-length hole blasting
deep hole blasting
middle deep hole blasting
Medium deep borehole blasting
blasting in medium deep bore
medium and deep hole blasting
medium-length pole blasting
ring holes blasting
In the deep hole blasting
medium-deep hole blowing up
medium-deep-hole blasting
bench blast
中深孔爆破参数
medium-length hole blasting parameter