put 3 balls on each side, os.tvboxnow.com: y4 X4 Z' x+ o8 c4 v. ]9 q
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。* I n4 B- [$ j( C& W3 }! J
if not balance, we can prove that the 6 balls outside the 天平 is normal.
?' `4 z0 L3 T' w9 B y( }1 ?3 Y# Ftvb now,tvbnow,bttvbthen use the proved-normal ball on one side and put the other ball on other side
7 ?" @9 l; Z2 j公仔箱論壇to determine the abnormal is heavy and light |