determining the ash of lignin
...法制备纤维素和木质素(A New Method for Making Cellulose and Lignin by HBS) 木质素灰分测定(Determining the Ash of Lignin) 硫酸法测定花生壳中木质素的含量(The Method of Sulfate acid to Determinate the Content of the Peanut Coat Lignin) ..
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determining the ash of lignin
测定木质素灰分
以上为机器翻译结果，长、整句建议使用 人工翻译 。