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optifdtd:最好有前后文这样才好计算 (2021-02-24 08:26) 0mk-o
sunguyzain:11.4 的公式錯誤了, 應該是 PI *A*sin(... f Cg"tckE PI 誤植為 4了 (2021-02-24 13:05) [!Uzw2