The making of new mould has 2 steps, first, 2 workers do rough turning, and then other workers do finefinishing.
新模具的加工分成两块，先由两位模具工进行粗车，再由模具工进行精加工。
2
High frequency pulse current machining and finefinishing can improve parts' machining accuracy and surface quality.
高频脉冲电流加工及光整加工技术能提高零件的加工精度和表面质量。
3
In the finishing, the movement of the grinder is irregular and uninterrupted but non-differential, it has fine structure and the statistical self-comparability.