put 3 balls on each side, tvb now,tvbnow,bttvb/ p b. P+ o& V% u; S
if balance, we can prove that all 6 balls on the 天平 is normal,
+ d4 H) @ p& k$ N" K' u3 _6 wTVBNOW 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。if not balance, we can prove that the 6 balls outside the 天平 is normal.
# `* J' P) X" q" u% athen use the proved-normal ball on one side and put the other ball on other side tvboxnow.com& M7 s# { ]/ I, s
to determine the abnormal is heavy and light |
發表於 2011-5-11 04:50 AM
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