document.write('<br><span style="font-size:15px">上一篇</span> <a href=/shtmlnewsfiles/ecomnews/613/2012/2012102312471623833.shtml  target="_blank">制冰厂制冰设备的使用注意事项及工业冰块制冰原理</a><br><span style="font-size:15px">下一篇</span> <a href=/shtmlnewsfiles/ecomnews/613/2012/201212042333701564.shtml  target="_blank">变频空调工作原理</a>')