put 3 balls on each side, TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。' w* D6 A* I( u- ^, C
if balance, we can prove that all 6 balls on the 天平 is normal, www2.tvboxnow.com$ e( f' U2 b. T: ?$ T
if not balance, we can prove that the 6 balls outside the 天平 is normal.
- R. P' Z$ c, U8 [公仔箱論壇then use the proved-normal ball on one side and put the other ball on other side
9 _, X+ V2 [- ]! F7 k$ ?! B9 e bto determine the abnormal is heavy and light |
發表於 2011-5-11 04:50 AM
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