是静摩擦和动摩擦吧，右手那边是静摩擦，静摩擦比动摩擦更强，所以纸跟右手一起保持不动

来源: 有个用户名于 2025-12-02 17:40:35 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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