put 3 balls on each side,
) t: x: v5 [% z/ M' h1 a. STVBNOW 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。if balance, we can prove that all 6 balls on the 天平 is normal,
5 Y+ F7 q3 s" u q+ C) gTVBNOW 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。if not balance, we can prove that the 6 balls outside the 天平 is normal.5.39.217.76' s# [- g5 U/ S$ J1 Y7 }
then use the proved-normal ball on one side and put the other ball on other side 5.39.217.762 M7 w2 o( B1 I3 f, g, E
to determine the abnormal is heavy and light |
發表於 2011-5-14 02:38 PM
| 