The moisture, ash, total humic acid and free humic acid of the brown coal were analyzed.

对褐煤水分、灰分、总腐植酸、游离腐植酸、进行了分析和评价。

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The moisture, ash, total humic acid and free humic acid of the brown coal were analyzed.

对褐煤水分、灰分、总腐植酸、游离腐植酸、进行了分析和评价。

youdao