测试文档 $$\begin{align}\int_0^Y T_M(y) \mathrm{d}y &= \int_0^Y \left( T_{M0} - \frac{\Omega^2 T_0}{2 a^2 g H} y^4 \right) \mathrm{d}y \&= T_{M0} y - \frac{\Omega^2 T_0}{2 a^2 g H} \frac{y 2025-06-18
