这种钻头可以切断异端光滑的圆柱行岩石,从中可以看出钻头所钻透的岩面。

这种钻头可以切断异端光滑的圆柱行岩石,从中可以看出钻头所钻透的岩面。的英文翻译

基本释义

• It cuts a clean cylinder of rock, from which can be seen he strata the drill has been cutting through.