Tỷ lệ kèo nhà cái̶±Ŀһ䣬ܵӭȸ˵ȥһֻ̣ǽū˴Ԫˣһ̣ȴdzūںͳελҡͬʱҲ˵ĵλްθߣȻū˵ıȻƾһսЩƾѾٲٱū˵ѹơ˫һκӽ˫֮ͣѹһͷʽסΣһκӲת䣬һƳκ¡
ʿụ̃бЩ˵ĵλʿ˵ĵλͻήֹͣˣѾ÷ҡīңδҪְټ־СȴҲبδУߴһٲͳȻ˵ȴ˸˷֮ɫ~һκһһնԴԼѾĶӣܿءǡһ̣ͻȻصߡ
һµͷԺһֿʼ乭Ժ˲һƬհףҪЩͶūսʿɱ⣡˲Dzɱ𣿡үүһۺǵʬ壬˵ӾͳAҹԣʱȱȱһԵӵЦʵʦβҪĩԸЧͣ
հȻ뿪ıӰͷüͷ֣ԼľٶѾ˲µIJЩԭԼҳϵȴĻɣûмᣬӼɵ࣬һҹͷʧˡڶʮ Ӣڼݵĵط¹ϵ磬һĿ꣬ͺɵִУһ۸е硣