seam blast 中文意思是什麼
seam blast
解釋
縫合處爆破-
Application of deep - hole pre - splitting blast and coal body reinforcement technique by metal skeleton and grouting in a face by crosscut for exposing coal seam
深孔控制預裂爆破與金屬骨架注漿加固煤體技術在石門揭煤工作面的應用 -
Application on blast - winning technology with sublevel caving of hydraulic prop in inclined seam
單體支柱炮采放頂煤技術在大傾角煤層的應用 -
Talking about the roof management at slope thick seam blast mining surface
淺談傾斜厚煤層炮采工作面的頂板管理
分享友人