Pre-esterification of China wood oil catalyzed by solid acid in fixed bed reactor was researched.
利用固定床反应器，以固体酸为催化剂催化桐油预酯化反应。
American sized Solid wood Sleigh bed covered in 100% silk fabric.
美国中小型实木雪橇床上铺着100%真丝面料的纺织品。
American sized Solid wood Sleigh bed covered in 100% silk fabric.
美国中小型实木雪橇床上铺着100%真丝面料的纺织品。
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