Kèo nhà cái
һڼγͷƽƽȫȫʾλΪеѡͷӴͬ15.5%ͬ13%ƽӴͬ6.4%ͬ7.7%ֵһиĺʹ˺ĻΪеһ¡ꡱ˺ɭֹӴο13˴ͬ15%ȴ¸ݹҵݱ2018һȹ繫˾ͳйɿ99.9812%ѹϸ99.999%оҵ涨еɿʲ99.90%ѹϸʲ96%ũɿʲ99.70%ѹϸʲ95%ڲǿ豸άȷȫаȫɿʹõõ
ŮԶͳĻʵϷȡóɾĻҪŮڻͥгеĽɫҲҪҪӵűмԼŮܽռͷչһЩԸҵĿŮ˵ѡԱġ̶ǵȨƺҲǵʱİʦǵѧУʱ˺ܹ˵еѧѹɡ2017ȡͬѧУתѧ˲˲ѧص
ԭ20117201210ҹ˾ϰҾӭ½˾СůӡĿλ쳣Զͬڲο2012ĵλ۴ﵽ2000Ԫ/ƽIJοֻ1000Ԫ