c)4 Stope-号 c(1)-(1-evr)a Characteristics 1 a S plane 0.632a 968.66 0 O66 267:Pm Slope T 2T 3T 4T 577 dt l=0= c0=a1-e六) Treduce of transient portion response time distance toj T reduce of transient portionT response time distance to jo 响应时间 日6T reduce of transient portion response time distance to j T reduce of transient portion response time distance to j 1 ( ) (1 ) t T ct a e    (t0) Characteristics 1 T a e T a dt dc t t t T t      0 1 0 | | ( ) Slope 响应时间