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没错啊，4。71就是在圆周上走出来的，2*pi*r*1/4=4.71,4.54是怎么算的 ？In Reply To:这样考虑的话,即使不是都在底面上,最短路也可能经过底面. Posted by:xfxyjwf at 2005-07-28 15:26:12 Followed by: Post your reply here: |
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