ownership stamp book stamp
A shrinkage method combining with medium-length hole and shallow hole
electron-hole liquid drop (=electron-hole droplet)
hole by hole blasting technique
hole by hole detonating
hole by hole initiating
hole by hole initiation
hole-by-hole detonation
Hole-by-hole initiating
Hole-by-hole initiation
hole-edge stress of different hole
mid-and-deep hole combining shallow hole balsting