var _bdhmProtocol = (("https:" == document.location.protocol) ? " https://" : " http://"); document.write(unescape("%3Cscript src='" + _bdhmProtocol + "hm.baidu.com/h.js%3F83e8d4ba8c3dd1c5d05a795e63a2d7b4' type='text/javascript'%3E%3C/script%3E")); 现代轨道交通的UPS电源需求:

◆集中供电式UPS电源解决方案:

◆分散供电式UPS电源解决方案:
