Tỷ lệ kèo nhà cái¹ҡҡͷߵǰʢһЦҲɥ֮ʹͷԣȻײ츮ɣҲûȥ˫֣һҲû˻·Ұ飬ʹΣȻ֪ȻûнȥͷĿܣͷĿʾǰôԡ粴һĻнӹǿһķͲͨǿɱȡ
ĺˡڸĺڼæվЦʮ սӢͷҪ˿ڣʳȥǼˣˣԼ˿ڣȴ١
갰Ը߸߾ֽ˿УǰɱʬҰDZӵݽʿ·һؿһ㣬һ̣Χʿޡ߿дſ־Ŀ⣬֪Ŀʲôˡǡ°ҡҡͷͷһԱŮӦ֮ŮŴŮСߣգҲսɳ˿ƺɢˡ
ܲ鰡ҡҡͷְųǽ壬Ŀ⿴ӪķȲ˵Ƿʵʵһ飬ֻɾIJȣΣǺòһʿɾڣϲڣءӡ֣ܲ͵ЩĴһԺģȻһЩѵʣҲҪһʿǿһЩһȺһԺļҶƽΪУľս˿ͻϮ֮£ʿ䣬ٱͷһţ˲̼䣬㱻ɱɾ