(1)热一律 (2)理想气体 Mh=cdT△u=|c,T 若c为定值比热容, 则40=2-Rh P1 若c1为定值比热容 ,则1+hn(2) 理想气体 p p v v ( ) ( ) c pv RT c c R k c u f T h f T = − = = = = (1)热一律    q du w dh w = + = + t ws q = h + c + gz + 2 2 1 u cV dT   = 2 1 h cp dT   = 2 1 1 2 1 2 ln ln v v R T T s c  = V + 1 2 1 2 ln ln p p R T T s c  = p −   = 2 1 T q s  若cp 为定值比热容，则 若cV 为定值比热容，则