提出了一种新发现的与传统观念完全相反的现象———超越性加工现象，并进行了实验和理论分析，这对精密超精密甚至纳米加工有重要意义。 A newly discovered phenomenon that is completely opposite to the traditional concept --- Transient Machining Phenomenon is also studied. Experiments and theoretical analyzes are carried out. This is of great significance to precision ultra-precision and even nano-machining.