文章通过选样、筛分、磨样、烘样、溶样等手段对样品进行处理，并按标准ISO9507-1990对样品进行全铁含量检测，考察铁含量随不同粒径块铁矿的变化。
The samples were dealt with selection, sieve, grinding, drying and dissolving. The samples were tested according to ISO9507-1990, the variation of iron content at different particle sizes was studied.
通过筛分选样，对内蒙古锡盟地区大量蕴藏的火山渣及火山渣混凝土进行了材料性能实验研究。
Based on screening and sampling, properties of trass and trass concrete in Ximeng area of Inner Mongolia was studied.
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