2023.1.14

Posted on 2023-01-14 10:00  Math_0067  阅读(10)  评论(0编辑  收藏  举报

<?xml version="1.0"?>
<math xmlns="http://www.w3.org/1998/Math/MathML">
<mi mathvariant="bold-italic">A</mi>
</math>为<?xml version="1.0"?>
<math xmlns="http://www.w3.org/1998/Math/MathML">
    <mn>3</mn>
</math>

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