Recently,in the field of olefin polymerization people pay more attention to the functionalization of polyolefins based on its good properties. 在烯烃聚合中，聚烯烃的功能化是受到人们普遍关注的问题之一。
Progress on research of novel doubly-bridged metallocenes and their application as catalysts used in olefin polymerization were reviewed. 综述了双桥联茂金属催化剂的结构特征及其在催化烯烃聚合方面的研究进展。
