+1
所有跟帖:
• 類似的公式,不說幾千,幾百個是有的,都是源自同一新定律。寫科普,隨意選例。 -科普閑談- ♂ (0 bytes) () 10/27/2015 postreply 15:30:28
• 類似的公式,不說幾千,幾百個是有的,都是源自同一新定律。寫科普,隨意選例。 -科普閑談- ♂ (0 bytes) () 10/27/2015 postreply 15:30:28
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