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public measurement standards in chemistry
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public measurement standards in chemistry
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工学
〔化学计量基本概念〕
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public measurement standards in chemistry
化学社会公用计量标准
经中国县级以上地方人民政府计量行政部门批准,作为统一本地区化学成分量、物理化学特性量等的单位或量值的依据,在社会上实施化学计量监督并具有公正作用的化学计量标准。
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