put 3 balls on each side, os.tvboxnow.com& M: _1 U1 Z" c6 P, }/ y" p
if balance, we can prove that all 6 balls on the 天平 is normal,
/ K$ N% d M O: z4 l公仔箱論壇if not balance, we can prove that the 6 balls outside 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。# U8 k1 X7 W" D
then use the proved-normal ball on one side and put the other ball on other side
6 L' h' n& @! D Kos.tvboxnow.comto determine the abnormal is heavy and light |