isomorphism problem的用法和樣例：
例句
- Determining whether two graphs are isomorphic is referred to as the graph isomorphism problem.
確定是否是同構的兩個圖形稱為圖同構問題。 - The algorithm transforms the subgraph isomorphism problem into a matching problem between vertexes through the introduction of similarity features for every vertex.
通過單個頂點的相似度特徵，將子圖同構問題轉化為頂點之間的匹配問題。
