put 3 balls on each side,
5 I% g8 B3 s, e. k/ S4 U$ o公仔箱論壇if balance, we can prove that all 6 balls on the 天平 is normal,
& @% q2 Z+ s( z. Aif not balance, we can prove that the 6 balls outside the 天平 is normal.www3.tvboxnow.com. h6 v) L; K/ G" k+ l: K
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。3 W; ?; R; ]4 D2 J9 q4 B
to determine the abnormal is heavy and light |