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讓我們從機械制圖開始...... |
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可惜你沒有畫投影視圖,看不出對錯。把俯視圖畫出來。
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不只兩個
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Archiver|手機版|小黑屋|機械社區 ( 京ICP備10217105號-1,京ICP證050210號,浙公網安備33038202004372號 )
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