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Re:如果一个段弧是(100,720),是不是饶了一圈加上一个大半圈呢?In Reply To:如果一个段弧是(100,720),是不是饶了一圈加上一个大半圈呢? Posted by:Hacker_QC at 2006-10-21 17:23:54 一段弧永远不可能绕多于一圈 只能是一段弧 Followed by:
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