document.write("<div class='udPage'><img src='/image/title.gif' width='8' height='9' />&nbsp;&nbsp;<b>上一篇：</b><a href='/articledetail.asp?article_id=161'>EtherCAT总线通信Freerun、SM、DC三种同步模式分析</a></div><div class='udPage'><img src='/image/title.gif' width='8' height='9' />&nbsp;&nbsp;<b>下一篇：</b><a href='/articledetail.asp?article_id=159'>ohs认证的编码器-ORICOD编码器</a></div>")