The distillation system design of isomeric dichlorotoluene and its production process are given in detail in this paper.

详细讨论了二氯甲苯精馏塔系统的程设计与产过程。

In the presence of catalyst phosphoric acid,isomeric addition of bipentene with cis-butenedioic anhydride can form terpenyl bu tenedioic anhydride compound as expoxylite firming agent.

用磷酸做催剂，催业双戊烯与顺丁烯二酸酐进行加成反应。