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1992年审定通过了8项金属制品国家标准,文章评述了新标准的等级水平,并与相应的旧标准相比较,对比介绍了新标准的多项特点便于人们对新标准的认识、理解和应用。
In 1992, it approved 8 national standards for metal products. The article reviewed the level of new standards and compared them with the corresponding old standards. The article introduced a number of characteristics of the new standards to facilitate understanding, understanding and application of the new standards. .