Regular vinyl addition polymers may be obtained from particularly strained endocyclic double bonds.由带特殊张力的桥环双键可以得到规整的乙烯类加成聚合物....

endocyclic的音标：endocyclic的英式发音音标为：[endə'saɪklɪk]endocyclic的美式发音音标为：[endə'saɪklɪk]...

内环的...