论文部分内容阅读
前言近年来,废钢铁资源的调查和测算工作日益受到主管部门、企业和学术界的重视。不少有识之士做了大量艰苦而细致的工作,取得了丰硕的成果。据粗略统计,有关部门自1973年以来共组织翻译出版有关资源调查和测算方面的理论专
Preface In recent years, the investigation and measurement of scrap steel resources are increasingly valued by the competent authorities, enterprises and academia. Many people of insight have done a great deal of hard work and meticulous work and have achieved fruitful results. According to the rough statistics, relevant departments have organized translation and publication of theoretical studies on resources investigation and estimation since 1973