基本解释分歧指數词组短语短語absolute ramification index 絕對分歧指數a olute ramification index 絕對分歧指數relative ramification index [數]相對分歧指數ramification index of a morphism 態射分歧指數index of ramification [數]分歧指數ramification index更多词组专业释义數學分歧指標分歧指數