put 3 balls on each 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 {9 d- x7 V; O: R
if balance, we can prove that all 6 balls on the 天平 is normal, www2.tvboxnow.com1 J. E( F9 u3 x5 P c
if not balance, we can prove that the 6 balls outside the 天平 is normal.
! W9 l* x6 r# s) `" u. _www2.tvboxnow.comthen use the proved-normal ball on one side and put the other ball on other side 公仔箱論壇/ _7 f r; v( A0 ?4 s( f
to determine the abnormal is heavy and light |