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工程制图中, 什么时候 需要画 点划线,什么时候不用画 画不画的标准 是什么啊
工程制图中, 什么时候 需要画 点划线,什么时候不用画 画不画的标准 是什么啊
2025-03-15 06:53:42
推荐回答(1个)
回答1:
点画线分为细点画线和粗点画线。
细点画线一般应用于轴线、对称中心线、分度线、孔系分布的中心线、剖切线。
粗点画线一般应用于限定范围表示线。
我相信你问的一定是细点画线吧,因为粗点画线一般很少用到。
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