UID:285279
UID:64871
UID:303949
optifdtd:最好有前后文这样才好计算 (2021-02-24 08:26) Vz&!N/0i
sunguyzain:11.4 的公式錯誤了, 應該是 PI *A*sin(... O&?i8XsB PI 誤植為 4了 (2021-02-24 13:05) iC`K$LY4W