ISO 7404-4-2017 标准详情
- 标准号:ISO 7404-4-2017
- 中文标题:
- 英文标题:Methods for the petrographic analysis of coals -- Part 4: Method of determining microlithotype, carbominerite and minerite composition
- 标准类别:国际标准化组织ISO
- 发布日期:
ISO 7404-4:2017 specifies a method, using a graticule with 20 crossline intersections, for determining the proportions of microlithotypes, carbominerite and minerite in coals. It applies only to determinations made on polished particulate blocks usin
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