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VER 2file.yizimg.com/356076/2011040213374867.pdf2. 測量一個平面. 記住, 一個平面的構成要件是至少需要三點, 散佈於工件 的表面. 除此之外, 也可以利用其他先前已經測量的元素來構成平面,
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