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´óÉñ°ïÎÒ¿´¿´£¬Õâ¸öº¯ÊýµÄ¶¨Òå´íÔÚÄÄÀïÁË¡£![]() ![]() function concen= LibrConcen(P,T ) x1=40; x2=70; A0=-2.00755; B0=124.937; A1=0.16976; B1=-7.7165; A2=-0.003133362; B2=0.152286; A3=0.0000197668; B3=-0.0079509; C=7.05; D=-1603.54; E=-104095.5; delta=D^2-4*E*(C-log10(P)); delta=sqrt(delta); temref=-2*E/(D+delta)-273.15; while (1) x3=0.5*(x1+x2); f1=B0+temref*A0-T+(B1+temref*A1)*x1+(B2+temref*A2)*x1^2+(B3+temref*A3)*x1^3; f2=B0+temref*A0-T+(B1+temref*A1)*x2+(B2+temref*A2)*x2^2+(B3+temref*A3)*x2^3; f3=B0+temref*A0-T+(B1+temref*A1)*x3+(B2+temref*A2)*x3^2+(B3+temref*A3)*x3^3; if (f1*f3>0) x1=x3; else x2=x3; end if(abs(f3)<=10^(-6)) break else continue end end concen=x3/100; end |
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