6989| 11
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杯子是否存在黃金比例! |
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點評
比例中項。百度吧,你會知道這個數字有多神奇。
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Archiver|手機版|小黑屋|機械社區 ( 京ICP備10217105號-1,京ICP證050210號,浙公網安備33038202004372號 )
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