beginequationbegincasesL^=116fracYY_0^13-16a^=500fracXX_0^13-fracYY_0^13b^=200fracYY_0^13-fracZZ_0^13endcasesendequationbeginequationbegincasesL^=9033fracYY_0a^=38935fracXX_0-fracYY_0b^=15574fracYY_0-

\begin{equation*} \begin{cases}L^=116(\frac{Y}{Y_0})^{1/3}-16, a^=500[(\frac{X}{X_0})^{1/3}-(\frac{Y}{Y_0})^{1/3}], b^=200[(\frac{Y}{Y_0})^{1/3}-(\frac{Z}{Z_0})^{1/3}]\ L^=903.3(\frac{Y}{Y_0}), a^=3893.5(\frac{X}{X_0}-\frac{Y}{Y_0}), b^=1557.4(\frac{Y}{Y_0}-\frac{Z}{Z_0}) \end{cases} \end{equation*}