A、无公式可算 B、ΔS=m>Cm><m>subm>>p,mm>subm>>ln(m>Vm><m>subm>>2m>subm>>/ m>Vm><m>subm>>1m>subm>>) + m>Cm><m>subm>>m>vm>,mm>subm>>ln(p<m>subm>>2m>subm>>/ p<m>subm>>1m>subm>>) m>Cm>、ΔS=Rln(m>Vm><m>subm>>2m>subm>>/ m>Vm><m>subm>>1m>subm>>) D、ΔS=(m>Cm><m>subm>>p,mm>subm>>/m>Cm><m>subm>>m>vm>,mm>subm>>) ln(p<m>subm>>2m>subm>>/ p<m>subm>>1m>subm>>)