看來我的物理都白學了. 直到今天才知道, 能量的單位是公尺.

來源: 花椒於 2013-12-30 14:23:54 [舊帖] [給我悄悄話] 本文已被閱讀：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.