等式最好轉成：r^2=1/4*(x+y+z)^2-54/4 才好繼續

來源: Bob007 於 2025-02-01 19:58:49 [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.