時間微分記号∂/∂tを表示する
<pddt/>
<pddt/>T = α<nabra/><sup>2</sup>T
| ∂ |
| ∂t |
<xsl:template match="pddt">
<table class="frac">
<tr><td class="num">∂</td></tr>
<tr><td>∂t</td></tr>
</table>
</xsl:template>
table.frac
{
display:inline;
vertical-align:middle;
font-style:italic;
font-size:90%;
text-align:center;
}
td.num
{
border-bottom:#000000 1pt solid;
}