AutoCAD常用绘图及编辑命令

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硬指标是以统计数据为基础,把统计数据作为主要评价信息,通过硬指标信息的直接提取或硬指标计算公式,最终获得数量结果的业绩考评指标orequalto200mm,notmorethan4mm.7.3.9simmeringbendingproductionofsquaresteeltubeextension,tousethewholetubebending.Interfaceifnecessary,theweldingpositionshouldbelocatedinthemiddleoftheverticalarm.7.3.10installexpansionjointsshouldbedone.Ifdesignisnotrequired,pipecompensatorlengthenshouldconformtotherequirementsinthefollowingtable:squarescalelengthδxisequalto1/2.Prestretchtolerance:casing+5mm,+10mm.7.3.11pipeform,location,spacingshallmeetthedesignandspecifications.7.3.12pipingonbackorreturnpipeathigherlevelsoftheuppertoautomaticvalvetoinstalladrainvalvebelowthehorizontalparts.7.3.13supportsandhangersofchecksandthenumber1)hangerinstalledmustbecheckedbeforeinstallationofsupportsandhangerspartmodels,specificationsofspringssettingvalues,whetherthematerialsmeettherequirementsofdrawingsanddocuments;2)supportsandhangersofmaterial,sizeandaccuracyshallconformtotheprovisionsofthedesigndrawings,materialtechnicalrequirementsshouldbeconsistentwithnationalstandards,industrystandardsandtechnicalrequirementsrelatedtothealloyspectrumreviewshouldbecarriedout;3)pipesupportsandhangerspartplantproductqualitycertificateforeachvariablespringsupports,constantsupporthangers,dampers,damperfunction,thereshouldbefactorycalibratedtestandperformancetestcopiesoftherecord.Ifnecessary,reviewshouldbe●第二讲●AutoCAD常用绘图及编辑命令(4学时上机4学时)一、删除命令(Erase)(P90)㈠功能:用于将选中的对象删除。㈡调用命令的方式:①菜单:修改→删除②命令行:erase或e③工具栏:㈢说明:启动Erase命,输入回车,你选中的对象被删除掉。注意:删除命令只能令后,光标会变成小方框形,AutoCAD中称之为拾取光标,选中你要删除的图形对象,则它显示为虚线,选择完毕删除整个图形,而不能删除图形的一部分,即:若删除一条直线,则整条直线均被删除,而不能只删除直线的一部分。㈣实例与操作:输入命令:erase则出现提示:选择对象:此时光标变为小方框形,可利用“选择集”来选择欲删除的对象。㈤构造选择集(P138)在AutoCAD中,进行编辑修改操作,一般均需要先选择操作的对象,然后进行实际的编辑修改操作。所选择的图形对象便构成了一个集合,称之为选择集。硬指标是以统计数据为基础,把统计数据作为主要评价信息,通过硬指标信息的直接提取或硬指标计算公式,最终获得数量结果的业绩考评指标orequalto200mm,notmorethan4mm.7.3.9simmeringbendingproductionofsquaresteeltubeextension,tousethewholetubebending.Interfaceifnecessary,theweldingpositionshouldbelocatedinthemiddleoftheverticalarm.7.3.10installexpansionjointsshouldbedone.Ifdesignisnotrequired,pipecompensatorlengthenshouldconformtotherequirementsinthefollowingtable:squarescalelengthδxisequalto1/2.Prestretchtolerance:casing+5mm,+10mm.7.3.11pipeform,location,spacingshallmeetthedesignandspecifications.7.3.12pipingonbackorreturnpipeathigherlevelsoftheuppertoautomaticvalvetoinstalladrainvalvebelowthehorizontalparts.7.3.13supportsandhangersofchecksandthenumber1)hangerinstalledmustbecheckedbeforeinstallationofsupportsandhangerspartmodels,specificationsofspringssettingvalues,whetherthematerialsmeettherequirementsofdrawingsanddocuments;2)supportsandhangersofmaterial,sizeandaccuracyshallconformtotheprovisionsofthedesigndrawings,materialtechnicalrequirementsshouldbeconsistentwithnationalstandards,industrystandardsandtechnicalrequirementsrelatedtothealloyspectrumreviewshouldbecarriedout;3)pipesupportsandhangerspartplantproductqualitycertificateforeachvariablespringsupports,constantsupporthangers,dampers,damperfunction,thereshouldbefactorycalibratedtestandperformancetestcopiesoftherecord.Ifnecessary,reviewshouldbe2在构造选择集的过程中,被选中的对象将显示为虚线。在AutoCAD中,当需要构造选择集时,会显示:“选择对象:”提示,此时,我们可以:1.单选将小方框光标移动到需要的图形对象上,按鼠标左键进行点取,每次只能选取一个图形对象。2.窗选(Window)在“选择对象:”提示下输入W,则进入窗口选取,接着又出现提示:指定第一个角点:输入窗口的一个顶点后又出现提示:指定对角点:输入窗口的另一个对角顶点则完全包括在这个窗口中的图形对象被选中,且变为虚线。只有完全落在窗口内的对象可被选中,而仅部分落在窗口内的对象不会被选中。注意:当进行单选而没有选中任何图形对象时,AutoCAD会自动进入窗选状态。3.窗交(Crossing)在“选择对象:”提示下输入C,则进入窗交选取,接着又出现提示:指定第一个角点:输入窗口的一个顶点后又出现提示:指定对角点:输入窗口的另一个对角顶点则不仅完全包括在这个窗口中的图形对象被选中,而且与这个窗口相交的图形对象也会被选中。4.上一个(Last)在“选择对象:”提示下输入L,即可选中最后生成的图形对象。5.全选(All)在“选择对象:”提示下输入All,即可选中所有的图形对象。硬指标是以统计数据为基础,把统计数据作为主要评价信息,通过硬指标信息的直接提取或硬指标计算公式,最终获得数量结果的业绩考评指标orequalto200mm,notmorethan4mm.7.3.9simmeringbendingproductionofsquaresteeltubeextension,tousethewholetubebending.Interfaceifnecessary,theweldingpositionshouldbelocatedinthemiddleoftheverticalarm.7.3.10installexpansionjointsshouldbedone.Ifdesignisnotrequired,pipecompensatorlengthenshouldconformtotherequirementsinthefollowingtable:squarescalelengthδxisequalto1/2.Prestretchtolerance:casing+5mm,+10mm.7.3.11pipeform,location,spacingshallmeetthedesignandspecifications.7.3.12pipingonbackorreturnpipeathigherlevelsoftheuppertoautomaticvalvetoinstalladrainvalvebelowthehorizontalparts.7.3.13supportsandhangersofchecksandthenumber1)hangerinstalledmustbecheckedbeforeinstallationofsupportsandhangerspartmodels,specificationsofspringssettingvalues,whetherthematerialsmeettherequirementsofdrawingsanddocuments;2)supportsandhangersofmaterial,sizeandaccuracyshallconformtotheprovisionsofthedesigndrawings,materialtechnicalrequirementsshouldbeconsistentwithnationalstandards,industrystandardsandtechnicalrequirementsrelatedtothealloyspectrumreviewshouldbecarriedout;3)pipesupportsandhangerspartplantproductqualitycertificateforeachvariablespringsupports,constantsupporthangers,dampers,damperfunction,thereshouldbefactorycalibratedtestandperformancetestcopiesoftherecord.Ifnecessary,reviewshouldbe36.盒选(Box)在“选择对象:”提示下输入Box,则进入盒选,它由选择矩形(由两点确定)确定被选择的图形对象。如果该矩形的点是从左向右指定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