没修一门课来学。不过变分法我是专家。：）

来源: 蒋闻铭于 2025-12-03 17:55:54 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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没修一门课来学。不过变分法 我是专家。：）