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T        X        Y        Z
274.45   0.005448   0.830502    0.16405
277.35   0.00625     0.829832    0.163918
280.55   0.007212    0.829029   0.163759
284.65   0.008478    0.827972    0.16355
287.35    0.009714    0.82694    0.163346
290.95    0.01135     0.825574    0.163076
294.15    0.01323    0.824004     0.162766
297.15    0.01476    0.822726     0.162514
300.15    0.01716    0.820722     0.162118
303.35    0.01966   0.818634      0.161706
306.25    0.02213   0.816572      0.161298
T xΪʵÑé²âµÃÖµ£¬y,zÊÇÍÆµ¼ËùµÃ

lambda_12=0.3322*exp(P1./T),
lambda_21=3.0103*exp(P2./T),
lambda_13=0.1510*exp(P3./T),
lambda_31=6.6215*exp(P4./T),
lambda_23=0.4546*exp(P5./T),
lambda_32=2.1996*exp(P6./T),

lnr=3366.6*(1/495.22-1/T)-lnx;
r=exp(1-log(x+y.*lambda_12+z.*lambda_13)-x./(x+y.*lambda_12+z.*lambda_13)-y.*lambda_21/(x.*lambda_21+y+z.*lambda_23)-z.*lambda_31/(x.*lambda_31+lambda_32.*y+z)),
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