Qhov rooj yograted rau peb-plaub ntawm kev ntaus nqi ntawm phab ntsa ib puag ncig: {{3- teev qhov rooj yog siv nyob rau hauv 4- teev rated phab ntsa; ib 1-1 / 2- teev ntug hluav taws yog siv nyob rau hauv ib tug {4} teev rated phab ntsa; Thiab ib 3 / 4- teev qhov rooj yog siv nyob rau hauv phab ntsa ib nrab. Qhov kev zam no tseem ceeb yog tias 1 / 3- teev rated lub qhov rooj kuj tseem siv nrog ib teev phab ntsa.
Yog tias koj xav paub ntau ntxiv txog peb cov khoom lag luam hluav taws rooj tua hluav taws
