cad/图这个怎么画的，那个尤其是R50 cad中如何画1图中r100的那个圆弧，还有第二张图中r50...
\u8bf7\u6559cad\u4e2d\u4e0b\u56fe\u7684R50\u600e\u4e48\u753b\u554a\uff1f1,\u4ee5R25\u7684\u5706\u5fc3\u505a\u4e00\u4e2aR\uff0825+50\uff09\u7684\u5706\u3002
2\uff0c\u4ee5\u53f3\u8fb915\u7684\u4e0a\u7aef\u70b9\u4e3a\u5706\u5fc3\u505a\u4e00\u4e2aR50\u7684\u5706\u3002
3\uff0c\u4ee5\u4e0a\u97622\u4e2a\u5706\u7684\u4ea4\u70b9\u4e3a\u5706\u5fc3\u505a\u4e00\u4e2aR50\u7684\u5706\u3002
4\uff0c\u4fee\u526a\u5c31\u5f97\u5230\u4f60\u8981\u7684R50.
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\u56fe\u4e8c\uff0c\u628a\u570625\u7684\u6c34\u5e73\u4e2d\u5fc3\u7ebf\u5411\u4e0b\u504f\u79fb35\uff0c\u4ee5\u8be5\u5706\u5fc3\u4f5c\u5706\uff0c\u534a\u5f84\u4e3a50\uff0d12.5\uff1d37.5\u3002\u4e0e\u504f\u79fb\u7684\u7ebf\u6bb5\u76f8\u4ea4\u4e24\u70b9\uff0c\u9009\u62e9\u5de6\u4fa7\u4ea4\u70b9\u4e3a\u5706\u5fc3\uff0c\u534a\u5f8450\u4f5c\u5706\u5373\u53ef\u3002\u8fd8\u53ef\u4ee5\u628a\u6c34\u5e73\u4e2d\u5fc3\u7ebf\u504f\u79fb85\uff0c\u7528\u76f8\u5207\uff0d\u76f8\u5207\uff0d\u534a\u5f84\u4f5c\u5706\u3002
使用快捷键ARC +回车-选择起点，快捷键E+回车-选择端点，R+回车-输入你想要的半径。
把最右边的R10画好，从中心线向上偏移，向下偏移各15，那个R50就可以用 相切——相切——半径来画，第一相切选R10，第二相切选偏移15的那条直线，半径输入50，OK
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