Cac oi cho em hoi viec tinh toan mong bang tren nen Winkler nhu the nao chi giup e voi,e dang lam do an thiet mong bang e dang gap rac roi vi ko biet tinh the nao nua,mong cac bac giup do!
Ma cac bac cho e hoi them la voi tai trong kha lon Ntt=1863(t),Mtt=40(Tm),Qtt=0(t) voi nha 9 tang thi tinh...