如果总长为4。2:3就是1.6 ：2.4。所以，要把第2格的线段分成0.6 ：0.4。

来源: 宇之道于 2016-11-20 17:28:51 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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