Surfaces of components used in mechanical engineering and light engineering ; terminology according to stress conditions 机械工程和精密制造技术用元件的表面.与应力有关的术
And complicated parts have become more and more familiar . since the designing of their fixtures is not easy , it ' s hard to do process planning 作为其中的重要的组成部分,复杂零件由于装夹难度大、工艺设计困难,它的快速精密制造已成为现代制造技术中的重要课题。