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詞語:ulmin
ulmin的意思
ulmin 棕腐質;腐木質;榆皮素;烏明酸;soil ulmin 腐殖質;ulmin acid 烏明酸;soil-ulmin 土壤腐植質;
ulmin的參考例句
1.The content of soil ulmin, and the entire nitrogen have slightly rise; 土壤有機質、全氮含量略有上升;