留下(4/3)PIAB^2-V,留下2SQUT3)/3PI=36.75%

來源: jinjing 於 2010-09-13 06:28:03 [舊帖] [給我悄悄話] 本文已被閱讀：次

丟太多,還是按常規切為好.

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留下(4/3)PI*A*B^2-V,留下2SQUT3)/3PI=36.75%