Manganese and chromium ores—Experimental methods for checking the bias of sampling and sample preparation
IDT ISO 8541:1986
全国生铁及铁合金标准化技术委员会
本标准规定了按相关标准规定的方法进行取样时，校核天然或加工锰、铬矿石取样和制样偏差的试验方法。
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