IQueryable<QueueItem> rs = from a in ldb.QueueItems join c in ldb.RobotsXEnvironments on b.Id equals c.RobotIdjoin d in ldb.Environments on c.EnvironmentId equ
我首先声明一个符号函数,然后用数字替换的方式来求解它:Vo(Ps,BWc,BWs,Ro,n,LdB,Rpd)=(Ps)*(BWc/BWs)*,Ro,n,LdB,Rpd)= solve('Vo=(Ps)*(BWc/BWs)*Ro*(10^((-(3+2*n)*LdB)/10))*Rpd','Ps');syms V