Examples for understanding system (1).Rigid adiabatic cylinder-piston system.Electrical heater in room B Red line closed,adiabatic system Yellow line without heater -closed system Yellow line with heater A B 庋 -closed,adiabatic system Blue line -isolated system 上游充通大 February 28,2019 7 SHANGHAI JLAO TONG UNIVERSITYFebruary 28, 2019 7 (1)．Rigid adiabatic cylinder-piston system. Electrical heater in room B Red line ——closed, adiabatic system Yellow line without heater ——closed system Yellow line with heater ——closed, adiabatic system Blue line ——isolated system Examples for understanding system