isoster

例句：

1. 1. The two structures are isosters of each other.
   这两个结构是彼此的同形物。
2. 2.The isomorphous structure of the compound is similar to that of the parent compound.
   化合物的同形结构与母体化合物的结构相似。
3. 3.The isomorphic relationship between the two compounds indicates a common molecular formula.
   两种化合物之间的同形关系表明它们具有相同的分子式。