if(document.getElementById('relative'))document.getElementById('relative').innerHTML='<div>前一篇：<a href=\"/other/chem_knowledge/show.asp?id=149071\" target=\"_self\">不同温度下原油的体积如何换算</a></div>\n<div>后一篇：<a href=\"/other/chem_knowledge/show.asp?id=153162\" target=\"_self\">中国已经成为全球煤化工产业基地</a></div>\n';