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1920 年建立的理化试验室的雏形还只是一个材料分析室,仅有2 台显微镜用来检验铁类金属材料。至40 年代中期日本人撤离大连机车车辆厂时,理化工作也只能从事简单的化学分析和常规机械性能的测试。新中国成立以后,理化工作得到了长足的发展。至1978 年固定资产增加到120 万。特别是改革开放以来,又新增固定资产169 万。理化工作走上了一条检验与科研相结合的道路。1987 年理化室被评为国家一级理化单位,1992 年通过了国家技术监督局国家级CMA计量认证,成为在国际上具有公证地位的理化质检机构
The embryonic form of physics and chemistry lab established in 1920 is only a material analysis room, only 2 microscopes are used to test ferrous metal materials. When the Japanese withdrew from Dalian Locomotive and Rolling Stock Works in the mid-1940s, physical and chemical work was limited to simple chemical analysis and testing of conventional mechanical properties. After the founding of new China, physical and chemical work has made considerable development. By 1978 fixed assets increased to 1.2 million. Especially since the reform and opening up, it has added 1.69 million fixed assets. Physical and chemical work embarked on a path of combining inspection and research. Physical and chemical room in 1987 was named the national level physical and chemical units, in 1992 passed the State Bureau of Technical Supervision CMA measurement certification, a notarized position in the international physical and chemical quality inspection agencies