C	specific heat at constant pressure (J/(kg·K))
w	mass fraction
A	air
S	steam
$T^{*}$	total temperature (K)
$T_{\mathrm{av}}^{*}$	surface average total temperature (K)
$T_{\mathrm{av},\mathrm{HI}}^{*}$	surface average temperature of high temperature area (K)
$T_1^{*}$	total inlet temperature (K)
$P_1^{*}$	total inlet pressure (Pa)
m	mass flow (kg/s)
$m_{1,\mathrm{cor}}$	corrected inlet mass flow (kg/s)
$m_1$	physical inlet mass flow (kg/s)
$D_{T^{*}}$	total temperature distortion intensity
$SM$	stall margin
${\pi }^{*}$	total pressure ratio
$n_{cor}$	corrected speed (r/min)
e	highest efficiency working point
$\rho$	density (kg/m3)
u	velocity (m/s)
p	static pressure (Pa)
$F$	force (N)
h	enthalpy (kJ/kg)
$\lambda$	thermal conductivity (W/m2·K)
b	stability boundary point
R1	first stage rotor
R2	second stage rotor
S1	first stage stator
S2	second stage stator
Notes: For symbols not listed, their specific meanings are subjected to the text.