document.write ('<table width="651" border="1" cellspacing="1" cellpadding="0" border="0" style="border-collapse: collapse" bordercolor="#C0C0C0" >  <tr>    <td valign="top" align="center">    <table width="217" cellspacing="2" cellpadding="0" border="0">      <tr>        <td bgcolor="#E6E5DC">&nbsp;随机文章</td>      </tr>    </table>    <table width="217" cellspacing="0" class="DoubleColorTable">       <tr class="data"><td align="left">　<a href="http://www.diamantworld.com/china/post/zixun-19.html">超硬材料制品创业园开工奠基仪式隆重举</a></td><tr class="data"><td align="left">　<a href="http://www.diamantworld.com/china/post/zixun-20.html">超硬磨料磨具的加工特点</a></td><tr class="data"><td align="left">　<a href="http://www.diamantworld.com/china/post/zixun-21.html">连续磨机用金刚石布拉磨具</a></td><tr class="data"><td align="left">　<a href="http://www.diamantworld.com/china/post/zixun-22.html">超高压水切割的知识问答</a></td><tr class="data"><td align="left">　<a href="http://www.diamantworld.com/china/post/technic-1.html">大理岩石的特征是什么？</a></td><tr class="data"><td align="left">　<a href="http://www.diamantworld.com/china/post/technic-2.html">激光焊接锯片的过渡层如何设计？</a></td><tr class="data"><td align="left">　<a href="http://www.diamantworld.com/china/post/technic-3.html">金刚石刀头中非金刚石层的作用</a></td><tr class="data"><td align="left">　<a href="http://www.diamantworld.com/china/post/zixun-23.html">金刚石行业专利发展挑战与机遇并存</a></td><tr class="data"><td align="left">　<a href="http://www.diamantworld.com/china/post/technic-4.html">如何用低品级金刚石生产刀头</a></td><tr class="data"><td align="left">　<a href="http://www.diamantworld.com/china/post/technic-5.html">如何用高品级、低浓度金刚石生产优质刀头</a></td>    </table>    </td>    <td valign="top" align="center">    <table width="217" cellspacing="2" cellpadding="0" border="0">      <tr>        <td bgcolor="#E6E5DC">本月热点文章</td>      </tr>    </table>    <table width="217" cellspacing="0" class="DoubleColorTable">           </table>    </td>    <td valign="top" align="center">    <table width="217" cellspacing="2" cellpadding="0" border="0">      <tr>        <td bgcolor="#E6E5DC">本年热点文章</td>      </tr>    </table>    <table width="217" cellspacing="0" class="DoubleColorTable">           </table>    </td>  </tr>  </td>  </tr></table>');