autocad练习图请教 AUTOCAD达到高级水平、需要哪几方面的练习？
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2\u3001\u7ed8\u5236\u56fe\u5f62\u7684\u51e0\u4e2a\u64cd\u4f5c
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2.1\u7ed8\u5236\u76f4\u7ebf\uff1a\u5355\u51fb\u5de5\u5177\u6761\u76f4\u7ebf\u547d\u4ee4\u6216\u5728\u547d\u4ee4\u884c\u4e2d\u8f93\u5165L\uff0c\u56de\u8f66\u3002\u5728\u7ed8\u56fe\u533a\u5355\u51fb\u4e00\u70b9\u6216\u76f4\u63a5\u8f93\u5165\u5750\u6807\u70b9\uff0c\u56de\u8f66\uff0c\u63a5\u7740\u6307\u5b9a\u4e0b\u4e00\u70b9\uff0c\u56de\u8f66\uff0c\u91cd\u590d\u4e0b\u4e00\u70b9\uff0c\u6216\u56de\u8f66\u7ed3\u675f\u64cd\u4f5c\u3002\u6216\u8005\u8f93\u5165C\u95ed\u5408\u3002
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2.2\u7ed8\u5236\u591a\u6bb5\u7ebf\uff1a\u591a\u6bb5\u7ebf\u662f\u7531\u4e00\u6761\u6216\u591a\u6761\u76f4\u7ebf\u6bb5\u548c\u5f27\u7ebf\u8fde\u63a5\u800c\u6210\u7684\u4e00\u79cd\u7279\u6b8a\u7684\u7ebf\uff0c\u8fd8\u53ef\u4ee5\u5177\u5907\u4e0d\u540c\u5bbd\u5ea6\u7684\u7279\u5f81\u3002\u5feb\u6377\u952e\uff1aPL\u3002\u5728\u4e09\u7ef4\u7b97\u91cf\u4e2d\u5b9a\u4e49\u5f02\u5f62\u622a\u9762\u3001\u624b\u7ed8\u5899\u3001\u6881\u7b49\u65f6\u5e38\u7528\u3002
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1\u3001 \u5220\u9664\uff1a\u7b26\u5408windows\u64cd\u4f5c\uff0cDel\u952e\u6700\u65b9\u4fbf\u3002
2\u3001 \u590d\u5236\uff1a\u662f\u628a\u4e00\u4e2a\u6216\u591a\u4e2a\u5bf9\u8c61\u590d\u5236\u5230\u6307\u5b9a\u7684\u4f4d\u7f6e\uff0c\u4e5f\u53ef\u4ee5\u5c06\u4e00\u4e2a\u5bf9\u8c61\u8fde\u7eed\u590d\u5236\u3002
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3\u3001 \u79fb\u52a8\uff1a\u5feb\u6377\u952e\uff1aM\u3002\u64cd\u4f5c\u4e0e\u201c\u590d\u5236\u201d\u76f8\u540c\uff0c\u4e0e\u590d\u5236\u529f\u80fd\u4e0d\u540c\u7684\u662f\uff0c\u590d\u5236\u662f\u591a\u4e86\u4e00\u4e2a\u5bf9\u8c61\uff0c\u79fb\u52a8\u53ea\u662f\u6539\u53d8\u4e86\u5bf9\u8c61\u7684\u4f4d\u7f6e\u3002
4\u3001 \u4fee\u526a\uff1a\u5feb\u6377\u952e\uff1aTR\u3002\u53ef\u4ee5\u6309\u6307\u5b9a\u7684\u8fb9\u754c\u526a\u5207\u4e0d\u9700\u8981\u7684\u90e8\u5206\u3002
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5\u3001 \u5ef6\u4f38\uff1a\u5feb\u6377\u952e\uff1aEX\u3002\u7528\u4e8e\u628a\u5ef6\u4f38\u5bf9\u8c61\u7cbe\u786e\u7684\u5ef6\u4f38\u5230\u76ee\u6807\u8fb9\u754c\u4e0a\u3002
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\u4e09\u3001\u5bf9\u8c61\u6355\u6349
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1\u3001 \u5bf9\u8c61\u6355\u6349\u8bbe\u7f6e
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\u56db\u3001\u6b63\u4ea4\u6a21\u5f0f\uff1a
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\u4e94\u3001\u56fe\u5c42\u6a21\u5f0f\uff1a
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\u5feb\u6377\u952e\uff1aLA
\u516d\u3001\u89c6\u56fe\u7f29\u653e\u547d\u4ee4\uff1a
1\u3001 \u5b9e\u65f6\u5e73\u79fb\uff1a\u5feb\u6377\u952e\uff1aP\u3002
\u5355\u51fb \u6216\u8f93\u5165P\uff0c\u56de\u8f66\uff0c\u6216\u8005\u6309\u4e0b3D\u9f20\u6807\u7684\u6eda\u52a8\u952e\uff0c\u9f20\u6807\u4f1a\u53d8\u6210\u50cf\u624b\u4e00\u6837\u7684\u56fe\u6807\uff0c\u6309\u4e0b\u9f20\u6807\u5de6\u952e\u62d6\u52a8\uff0c\u5e73\u79fb\u56fe\u5f62\u3002
2 \u3001\u5b9e\u65f6\u7f29\u653e\uff1a\u5229\u75283D\u9f20\u6807\u7684\u6eda\u52a8\u952e\u6eda\u52a8\u53ef\u4ee5\u5b9e\u73b0\u5b9e\u65f6\u7f29\u653e\u3002\u4e5f\u53ef\u4ee5\u5355\u51fb \uff0c\u524d\u540e\u79fb\u52a8\u9f20\u6807\u5b9e\u65f6\u7f29\u653e\u3002
3 \u3001\u7a97\u53e3\u7f29\u653e\uff1a\u5355\u51fb\u7a97\u53e3\u7f29\u653e \uff0c\u6309\u4e0b\u9f20\u6807\u5de6\u952e\u62d6\u52a8\u6846\u9009\u9700\u8981\u7f29\u653e\u7684\u533a\u57df\u3002
4 \u3001\u7f29\u653e\u5230\u4e0a\u4e00\u6b21\uff1a\u5355\u51fb \uff0c\u89c6\u56fe\u5c06\u6062\u590d\u5230\u4e0a\u4e00\u4e2a\u7f29\u653e\u7684\u89c6\u56fe\u3002
5 \u3001\u8303\u56f4\u7f29\u653e\uff1a\u5355\u51fb \uff0c\u7cfb\u7edf\u5c06\u6240\u6709\u56fe\u5f62\u5168\u90e8\u663e\u793a\u5728\u5c4f\u5e55\u4e0a\uff0c\u5e76\u6700\u5927\u9650\u5ea6\u5145\u6ee1\u6574\u4e2a\u5c4f\u5e55\u3002
2.确定圆位置。分解三角形，等分角A，以A点为圆心作半径为10mm的圆，移动再等分线上移动圆到其与AB、AC相切，向问题中一样copy3个圆
3.确定110°线位置。_exline过B点绘制110°直线L。过最右侧圆向其作垂线找出切点，移动直线L与最右侧圆相切。延伸AB，与L相交。Command: _xline Specify a point or [Hor/Ver/Ang/Bisect/Offset]: a
4，确定圆大小，整个图形大小比例。sc缩放图形，以A为基点，AB为基线，将AB缩放为90mm
5.确定问题中“A”复制AC向右平移35，，延伸使其与L相交，过交点作AB平行线，交AC与D，过D作-17°构造线。e、tr删除、剪切多余线条。
6。复制圆到梯形上部中点；tr剪切
7.pl转化为面域，area面积
Command: pol
POLYGON Enter number of sides <4>: 3
Specify center of polygon or [Edge]: e
Specify first endpoint of edge: Specify second endpoint of edge: <Ortho on> 90
2.确定圆位置。分解三角形，等分角A，以A点为圆心作半径为10mm的圆，移动再等分线上移动圆到其与AB、AC相切，向问题中一样copy3个圆
Command: c
CIRCLE Specify center point for circle or [3P/2P/Ttr (tan tan radius)]:
Specify radius of circle or [Diameter]: 10
Command:
Command:
Command: _xline Specify a point or [Hor/Ver/Ang/Bisect/Offset]: b
Specify angle vertex point:
Specify angle start point:
Specify angle end point:
Specify angle end point:
Command: m
MOVE
Select objects: Specify opposite corner: 1 found
Select objects:
Specify base point or [Displacement] <Displacement>: Specify second point or
<use first point as displacement>:
Command: MOVE
Select objects: Specify opposite corner: 1 found
Select objects:
Specify base point or [Displacement] <Displacement>: Specify second point or
<use first point as displacement>:
Command: co
COPY
Select objects: Specify opposite corner: 1 found
Select objects:
Current settings: Copy mode = Multiple
Specify base point or [Displacement/mOde] <Displacement>: Specify second point
Specify second point or <use first point as displacement>: 20
Specify second point or [Exit/Undo] <Exit>: 40
Specify second point or [Exit/Undo] <Exit>: 60
Specify second point or [Exit/Undo] <Exit>:
3.确定110°线位置。_exline过B点绘制110°直线L。过最右侧圆向其作垂线找出切点，移动直线L与最右侧圆相切。延伸AB，与L相交。Command: _xline Specify a point or [Hor/Ver/Ang/Bisect/Offset]: a
Enter angle of xline (0) or [Reference]: 110
Specify through point:
Specify through point:
Command: l
LINE Specify first point:
Specify next point or [Undo]:
Specify next point or [Undo]:
Command: m
MOVE
Select objects: 1 found
Select objects:
Specify base point or [Displacement] <Displacement>: Specify second point or
<use first point as displacement>:
Command: ex
EXTEND
Current settings: Projection=UCS, Edge=None
Select boundary edges ...
Select objects or <select all>: 1 found
Select objects:
Select object to extend or shift-select to trim or
[Fence/Crossing/Project/Edge/Undo]:
Object does not intersect an edge.
Select object to extend or shift-select to trim or
[Fence/Crossing/Project/Edge/Undo]:
4，确定圆大小，整个图形大小比例。sc缩放图形，以A为基点，AB为基线，将AB缩放为90mm
Command: sc
SCALE
Select objects: Specify opposite corner: 8 found
Select objects:
Specify base point:
Specify scale factor or [Copy/Reference] <1.0000>: r
Specify reference length <1.0000>: Specify second point:
Specify new length or [Points] <1.0000>: 90
5.确定问题中“A”复制AC向右平移35，，延伸使其与L相交，过交点作AB平行线，交AC与D，过D作-17°构造线。e、tr删除、剪切多余线条。
Command: co
COPY
Select objects: 1 found
Select objects:
Current settings: Copy mode = Multiple
Specify base point or [Displacement/mOde] <Displacement>: Specify second point
or <use first point as displacement>: 35
Specify second point or [Exit/Undo] <Exit>:
Command: l
LINE Specify first point:
Specify next point or [Undo]:
Specify next point or [Undo]:
Command:
Command:
Command: _xline Specify a point or [Hor/Ver/Ang/Bisect/Offset]: a
Enter angle of xline (0) or [Reference]: -17
Specify through point:
Specify through point:
Command: tr
TRIM
Current settings: Projection=UCS, Edge=None
Select cutting edges ...
Select objects or <select all>: Specify opposite corner: 11 found
6。复制圆到梯形上部中点；tr剪切
Command: co
COPY
Select objects: 1 found
Select objects:
Current settings: Copy mode = Multiple
Specify base point or [Displacement/mOde] <Displacement>: Specify second point
or <use first point as displacement>:
Specify second point or [Exit/Undo] <Exit>:
Command: tr
TRIM
Current settings: Projection=UCS, Edge=None
Select cutting edges ...
Select objects or <select all>: Specify opposite corner: 9 found
7.pl转化为面域，area面积
最简单的方式是：用CAD绘制当前图形后用填充命令（快捷键为H）用任意图案进行填充，然后用AA+空格+o选择当前填充或选择当前填充输入LI
这2种命令都会得到准确的面积
先做成面域，再输入list，回车，就显示面积是多少了！
画出这个图后，先创建成面域，然后输入“aa”按“确认”或“空格”键，根据提示输入“o”按“确认”或“空格”键，再选中面域，就能看到面积了
快捷键li ，选中区域，回车，就知道面积了
幻影说得是正确的，我刚才试过了
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