📄 content-3-3.htm
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<td > 本节介绍<a href="content-3-1-1.htm#content-3-1-1-jihe">集</a>合的<a href="content-3-3-2.htm#content-3-3-2-dikaerchengji">笛卡儿乘积</a>，其基础为<a href="content-3-3-1.htm#content-3-3-1-xuou">序偶</a>。</td>
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<div align="center" >本节重点：</div>
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<div align="left" >序偶、多重序元、笛卡尔乘积</div>
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<div align="center" >本节难点：</div>
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<div align="left" >多重序元</div>
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<p style="line-height: 150%"> </p><p align="right"><b><a href="contentFrame-mulu.htm"><<back</a></b>
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