These compounds make up approximately 10 to 15% of the total organic matter in soils . 这些化合物占整个土壤有机质总量的10-15。
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These compounds make up approximately 10 to 15 % of the total organic matter in soils 这些化合物占整个土壤有机质总量的10 - 15 。
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Analysis of formulated detergents - quantitative test methods - methods for determination of total organic matter content 配制洗涤剂的分析.定量试验方法.有机物质总含量的测定方法
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Organic soil conditioners and organic material for soil improvement . determination of total organic matter . calcination method 土壤改良用有机土壤改良剂和有机物质.总有机物质的测定.煅烧法