近年来随着科技的进步和生产的发展 ,出现了许多坚硬而难以加工的 ,具有精密公差尺寸和低表面粗糙度的复杂零件的加工 ,导致了许多新的加工方法的产生。这些加工方法不同于传统的切削加工 ,现称之为现代加工方法。本书的内容主要包括超声波加工、电化学加工、电火花加工、激光? In recent years, with the progress of science and technology and the development of production, many hard and difficult to process, with precision tolerance size and low surface roughness of complex parts processing, resulting in many new processing methods. These processing methods are different from the traditional cutting, now known as the modern processing methods. The contents of this book include ultrasonic machining, electrochemical machining, EDM, laser?