<div class="content">
<dl id="n_tab_c" class="tab_c">
<dd style="display:block">{pa:model}1,43,239,,id desc,_self,8,50,150,120{/pa:model}</dd>
<dd>{pa:model}1,43,241,,id desc,_self,8,50,150,120{/pa:model}</dd>
<dd>{pa:model}1,43,236,,id desc,_self,8,50,150,120{/pa:model}</dd>
<dd>{pa:model}1,43,237,,id desc,_self,8,50,150,120{/pa:model}</dd>
<dd>{pa:model}1,43,520,,id desc,_self,8,50,150,120{/pa:model}</dd>
</dl>中，数字8是怎么确定的？