低损耗电火花加工一直是人们所探求的目标。粉碎“四人帮”后,学术讨论又十分活跃起来,这是广大科技人员响应华主席、党中央向科学技术现代化进军的具体表现,形势大好。本刊在近几期里,发表了几篇有关低损耗电火花加工的不同见解和观点,虽然还缺乏严密的实验结论,但对促进学术交流和讨论,使低损耗加工从理论和实践上,能较迅速地得以突破。我们期望读者就这些问题展开讨论。 Low-loss EDM has always been the goal of people. After the smashing of the “gang of four,” the academic discussions have been very active again. This is a concrete manifestation of the general response of science and technology personnel to Chairman Hua and the party Central Committee’s march toward the modernization of science and technology. In recent issues, published several different views and opinions on low-loss EDM, although the lack of rigorous experimental conclusions, but to promote academic exchange and discussion, so that low-loss machining in theory and in practice, Can be more quickly to break through. We expect readers to discuss these issues.