boletic acid的用法和样例：
例句
- In this paper, the method of the synthesis of fumaric acid modified rosin was studied.
富马松香由富马酸对松香经过加成改性而成。 - By using concentrated chlorhydric acid as catalyst,one-step reaction takes place between maleic anhydride and methanol and obtains dimethyl fumarate.
马来酸酐与甲醇在浓盐酸催化作用下，经一步反应生成富马酸二甲酯。
