document.write('<br><span style="font-size:15px">上一篇</span> <a href=/shtmlnewsfiles/ecomnews/613/2012/2012100518294446215.shtml  target="_blank">溴化锂吸收式制冷机的工作原理</a><br><span style="font-size:15px">下一篇</span> <a href=/shtmlnewsfiles/ecomnews/613/2012/2012100518385301682.shtml  target="_blank">一般制冷原理</a>')