留下(4/3)PIAB^2-V,留下2SQUT3)/3PI=36.75%

来源: jinjing 于 2010-09-13 06:28:03 [旧帖] [给我悄悄话] 本文已被阅读：次

丢太多,还是按常规切为好.

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