木质素是一种高度聚合的无定形材料，组成木质纤维的胞间薄层将纤维连接起来。
Specifically, lignin is a highly polymerized, amorphous material that makes up the middle lamella of woody fibers and cements the fibers together.
木质素是一种高度聚合的无定形材料，组成木质纤维的胞间薄层将纤维连接起来。
Specifically, lignin is a highly polymerized, amorphous material that makes up the middle lamella of woody fibers and cements the fibers together.
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