基本解释分歧指数词组短语短语absolute ramification index 绝对分歧指数a olute ramification index 绝对分歧指数relative ramification index [数]相对分歧指数ramification index of a morphism 态射分歧指数index of ramification [数]分歧指数ramification index更多词组专业释义数学分歧指标分歧指数