XML
<cart>
<dimensions>15.2/44/13.5</dimensions>
</cart>
XSLt
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/cart">
<div>
<xsl:text>Ширина: </xsl:text>
<xsl:value-of select="substring-before(dimensions, '/')"/>
</div>
<div>
<xsl:text>Высота:</xsl:text>
<xsl:value-of select="substring-before(substring-after(dimensions, '/'), '/')"/>
</div>
<div>
<xsl:text>Глубина:</xsl:text>
<xsl:value-of select="substring-after(substring-after(dimensions, '/'), '/')"/>
</div>
</xsl:template>
</xsl:stylesheet>
Result
<div>Ширина: 15.2</div>
<div>Высота:44</div>
<div>Глубина:13.5</div>
Оно?