若已知: 30KW 40KW n=300 r/min 70KW 70 M,1=9549=9549=2228.1N·m 300 30 ,2=9549=954.9N·m 300 40 M.,=9549=1273.2N.m 3001 2 3 Mt1 Mt2 Mt3 N m n N Mt = = = 2228.1  300 70 1 9549 9549 Mt = = 954.9N m 300 30 2 9549 Mt = =1273.2N m 300 40 3 9549 70KW 30KW 40KW n=300 r/min 若已知：