put 3 balls on each side, ( }2 d l" V5 T* Z8 V7 d0 r- h
if balance, we can prove that all 6 balls on the 天平 is normal, 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。6 S. C9 S( B3 x4 L1 @
if not balance, we can prove that the 6 balls outside the 天平 is normal.公仔箱論壇+ d1 Y1 i* r% S
then use the proved-normal ball on one side and put the other ball on other 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。4 `$ a3 n3 ^9 B: o
to determine the abnormal is heavy and light |