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put 3 balls on each side, tvb now,tvbnow,bttvb# c  [  t. b8 ?7 ?5 i5 L: T" u
if balance, we can prove that all 6 balls on the 天平 is normal, 公仔箱論壇% D5 [0 m$ \' n- T
if not balance, we can prove that the 6 balls outside the 天平 is normal.
6 K6 O  c  _: w1 ^0 a- L! KTVBNOW 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。then use the proved-normal ball on one side and put the other ball on other side
: R0 _2 l. I9 c. Dto determine the abnormal is heavy and light