Kèo nhà cái 5˲Űڱ˵λҵߵְҵԺУҵ1еְҵѧУҵ3иְҵʸ35;мʦְҵʸ40;иʦְҵʸ50
߿һļʻѸٵ˵һǵһʧѹʻڵĿѸȥѸٵ¼ʻȱ㽭ݲ´ҩ˾³֣ԪͭᵽҩȷʵкܴһռҽˢΪֶռߴ60%-70%ıҽˢʳ͵
518ϢлֽȫмǿϿȫôɫչۺִԱͻۺִ֣¹ʳ
̬13ڹ6Ƿת㵹PΣշﰸչͨɽʡٷάΥ㵹ҵͨΪ෨ٷж50ʵʩȡôʩٷѲзIJͬǵ䷴ı걾ͬڹٷ϶´ϻһ¼ÿһչ۵IJ֮½ҲԼίίĹ˸ߵҪҪ켰ʱලִͲҪϰ̽յƺע¹ĿٻӦȫΧԻҵѾв١۷ŷ5ѮЧݱ˽ܷΥߴߴȫ4%ķʦԴ˾˵