8月26日是电火花加工方法创始人,苏联学者Б.Р.拉扎连柯教授的逝世纪念日。为了纪念Б.Р.拉扎连柯教授对电加工技术的杰出贡献,本刊特请曾在拉扎连柯教授身边工作、学习过的现中国机械工程学会电加工学会副秘书长、北京市电加工研究所所长、副研究员于家珊同志撰写专文,以表怀念。 August 26th was the founder of the EDM process and the anniversary of the death of the Soviet scholar Prof. P. Lazarenko. In commemoration of the outstanding contribution of Prof. .. Р. Lazarenko to the electrical processing technology, the magazine invited the Deputy Secretary-General of the Institute of Electrical Processing of the Chinese Mechanical Engineering Society, who had worked and studied at the side of Professor Lazarenko, Beijing. Comrade Yu Jiashan, director of the Institute of Electrical Processing and associate researcher, wrote a special article to express his memory.