A shrinkage method combining with medium-length hole and shallow hole
hole by hole blasting technique
hole by hole detonating
hole by hole initiating
hole by hole initiation
mid-and-deep hole combining shallow hole balsting
sham
水杨
哄骗
仿造的
佯装
伪品
虚假的
假装
假冒物
虚假
柿竹园多金属矿床
伪物
水杨肟酸
假手术
六偏磷酸钠
假手术组
1 Taper Hole in Coupling