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    <description>Latest 20 articles of N 个函数</description>
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      <title>namedobjdict（AutoLISP）</title>
      <link>https://www.cadn.net.cn/portal.php?mod=view&amp;aid=6148</link>
      <description><![CDATA[返回当前图形的命名对象字典的实体名称，该字典是图形中所有非图形对象的根]]></description>
      <category>N 个函数</category>
      <author>admin</author>
      <pubDate>Sat, 07 Jan 2023 10:38:59 +0000</pubDate>
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      <title>nentsel（AutoLISP）</title>
      <link>https://www.cadn.net.cn/portal.php?mod=view&amp;aid=6149</link>
      <description><![CDATA[通过指定点提示用户选择对象（实体），并提供对复杂对象中包含的定义数据的访问]]></description>
      <category>N 个函数</category>
      <author>admin</author>
      <pubDate>Sat, 07 Jan 2023 10:37:19 +0000</pubDate>
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      <title>nentselp（AutoLISP）</title>
      <link>https://www.cadn.net.cn/portal.php?mod=view&amp;aid=6150</link>
      <description><![CDATA[提供与 nentsel 函数类似的功能，无需用户输入]]></description>
      <category>N 个函数</category>
      <author>admin</author>
      <pubDate>Sat, 07 Jan 2023 10:35:39 +0000</pubDate>
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    <item>
      <title>不是（AutoLISP）</title>
      <link>https://www.cadn.net.cn/portal.php?mod=view&amp;aid=6151</link>
      <description><![CDATA[验证项目的计算结果是否为 nil]]></description>
      <category>N 个函数</category>
      <author>admin</author>
      <pubDate>Sat, 07 Jan 2023 10:33:59 +0000</pubDate>
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    <item>
      <title>第 n 个（AutoLISP）</title>
      <link>https://www.cadn.net.cn/portal.php?mod=view&amp;aid=6152</link>
      <description><![CDATA[返回列表的第 n 个元素]]></description>
      <category>N 个函数</category>
      <author>admin</author>
      <pubDate>Sat, 07 Jan 2023 10:32:19 +0000</pubDate>
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    <item>
      <title>null（AutoLISP）</title>
      <link>https://www.cadn.net.cn/portal.php?mod=view&amp;aid=6153</link>
      <description><![CDATA[验证项目是否绑定到零]]></description>
      <category>N 个函数</category>
      <author>admin</author>
      <pubDate>Sat, 07 Jan 2023 10:30:39 +0000</pubDate>
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      <title>numberp（AutoLISP）</title>
      <link>https://www.cadn.net.cn/portal.php?mod=view&amp;aid=6154</link>
      <description><![CDATA[验证项目是实数还是整数]]></description>
      <category>N 个函数</category>
      <author>admin</author>
      <pubDate>Sat, 07 Jan 2023 10:28:59 +0000</pubDate>
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