《有色金属》编辑部:我在贵刊1981年6期发表的“老式卷扬机的成功改造”一文中,提到采用了四个国家的先进技术是不妥的。这是由于我对该改造过程中深入调查不够造成的。实际上,此改造设计中没有引进瑞典、英国、西德、美国的先进技术,而是锡矿山矿务局和洛阳矿山机械研究所的工程技术人员,针对设 “Nonferrous Metals” Editorial Department: In my article, “Successful Transformation of Old Winches,” published in your June 1981 issue, I mentioned that the use of advanced technologies from four countries is not appropriate. This is due to my lack of in-depth investigation into the transformation. In fact, this reform did not introduce the design of advanced technology in Sweden, Britain, West Germany, the United States, but the Xikuangshan Mining Bureau and Luoyang Mining Machinery Institute of engineering and technical personnel,