With papermaking black liquor as its main source, Lignin is an important material that can be used in industry.

木质素主要来源于造纸黑液，具有潜在的工业价值。

youdao

With papermaking black liquor as its main source, Lignin is an important material that can be used in industry.

木质素主要来源于造纸黑液，具有潜在的工业价值。

youdao