Tỷ lệ kèo nhà cái̩̫ʷȣȥɱ𣡡һ½֮½ѷ̩̫ʷȣѾûתأ˶Խ̫볹ɱãʱҲݲȨٶԥ̫ʷȣ̩߿ʼ˵ʱѾԭ֮⣬͢ĴʲôģЩôԽԸãˣһֱȨδʵʵѾԳһ˼ķʽʱԽΪҲǵɹݣܵõɵһҪԭǴǿԣǴǣгǵ˵
ߣ̫ʷȿһۺڣʵŭһźԼдļʿŶɱȥ㣡ɷȵҽΪһδһսڵϴ˸תƣݺݵһ̫ʷٶ¡
Ͼһ̽ʢģؽʱߣѾĹ滮Ŷӣרҵʿзˮʦˮ岼ϣһָӻֺĸо˵Ƭۻң֮ͬõδؾͱǰ߸ۣÿһֵʺϵĵطࡢܡ£DZսαɳ˵ŧͽ˳Ц̫ʷЦһ
ȥͳָָͼԿԸ˿̿¸ذҪϸѾź˱ֻȥҾʮֵطûõġʲôЦĿ˵ڵϵлһۣҡͷҿĶӣǧĪҪҵ֮֮ˣᵹùġѹƣȻ֧ͻȻðǴijģҲѾǿʱЩֱӳɵ˺ɲС