NF P94-068-中文
土壤：勘测与试验 - 测量土壤或岩土材料亚甲蓝的吸附能力 - 斑点试验测定土壤或岩石材料的亚甲蓝值
Soil survey and testing - Measurement of the adsorption capacity of soil or rock materials for methylene blue - Spot test for determining the methylene blue value of soil or rock materials
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