Drilling: refers to the use of drilling or milling machine drill hole of the workpieceprocess.
钻孔：指在钻床或铣床上使用钻头对工件进行打孔的工艺过程。
2
Based on the comprehensive analysis on the causes of accuracy errors induced in workpieceprocess with Spanish boring lathe, the plan for treatment of machine foundation is put forward.
全面分析了西班牙镗床在加工工件时产生精度误差的原因，确定出相应的治理地基病害的方案。
3
The process of a pipe production is the following: a round cast workpiece is put onto a hot rolling line where it is cut, heated, stitched and rolled till a pipe of necessary size is ready.