重要国家标准的制订与宣贯（８３）──审查通过的十五项新国家标准介绍硫铁矿和硫精矿分析方法本系列标准为原国家标准的修订本。与原标准相比，主要有如下修改：原标准项目为１１项，方法为１４个；修订后的标准项目为１２项，方法为１９个。其中保留了采样与样品制备及... Formulation and Publicity of Important National Standards (83) - Review of the 15 New National Standards Adopted for Analysis of Pyrite and Sulfur Concentrate Analysis Methods This series of standards is a revision of the original national standard. Compared with the original standard, the following changes were mainly made: The original standard project was 11 items, and the method was 14 items; the revised standard item was 12 items, and the method was 19 pieces. Which retains sampling and sample preparation and...