<map id="ystdex::square" name="ystdex::square">
<area shape="rect" id="node1" title="计算平方。" alt="" coords="152,5,261,32"/>
<area shape="rect" id="node2" href="$d7/d04/a01246.xhtml#a7de6e800cec77c898d52c669f520aa3f" title="计算四次方。" alt="" coords="5,5,104,32"/>
</map>
