Kèo nhà cái 5°Сǰƺܵǹսգ˷ܵٶ㣬ƽǹһ˸ĶȻ˵һʱʱʱڽʮ˳ֻһҪ£Ҫƽ֧ܾȵðǴĻŽУɫĺԨԥһ£ǿկӱǸʵΪ֮ƣϣܹоӪկҰսоۼߡ˵ȴЦͳһۡ
ĬȻʵϣռ˳֮˹Σ˭ͷֹ̍ܲٿˣ˶ˣΪ˵ӣڷչδ̫谭н֮ǰ֣Сͬһ𣬽֣ӴϷǧȴ˽ܾ˵ˣܲڼݵˣɶս⣬Ҫִ֪еĿǾߣ½ǧ˿ڣȴʮǵıɶǮѳģ˵ֻҪĻǧ㹻ռεƾǿĺԨ˴ϣɴһʼĽĺԨ֧״ǻ
ңǵֻѧɣȷʵƣûЩѧ˵ιĻˡλӣжˣѾʧĿˣҡҡͷȥɣЩҪ
ڲ˼¹һŤƿڼ䲻ݷ֮ʱܿһͬʱ˳ֽҹӥƿǽϵʿѹ̧ͷų·ŽϵļͣЪȻ갰ɫȴøѿļͣЪˣǾʹųԨûܵסԷԷɱˡã