5121| 17
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關(guān)于autocad ,我怎么也畫不出圖中R=20的那段弧 |
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點(diǎn)評(píng)
這個(gè)試過(guò)了,,但是出來(lái)的圖形不是那個(gè),,弧長(zhǎng)有32
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