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
complete coronal restoration
coronal
冠状
日冕
冠
冕洞
冠状的
冠部的
冠状线的
冠状面
环形花环
冠状位
冠状突起
光环的
光圈的
日冕的
前舌音
Coronal Circular Plate Rubber Bearing