“heavy fraction of soil matter”的概念、定义、翻译、参考文献-科学参考

单词	heavy fraction of soil matter
释义	heavy fraction of soil matter Encyclopedia 农学土壤有机质释 heavy fraction of soil matter土壤重组有机质土壤有机无机复合体中密度大于2克/立方厘米的有机物质。
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