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

1.详细讨论了苯异构体精馏塔系统的工程设计产过程。

2.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.

2.用磷酸做催化剂，催化工业双顺丁酸酐进行异构加成反应。