Chapter 1 Basie Cirenis andtheir Applicatio B Play 吧 吧 a) b) a)Inlet one-direction b)Exhaust one-direction throttling speed control circuit throttling speed control circuit 14 Homepage List Upwards Dowrwards Retun Exit14 Chapter 11 Basic Circuits and their Application a) Inlet one-direction throttling speed control circuit b) Exhaust one-direction throttling speed control circuit