样式测试

进行一个试的测 \[ \frac{1}{\pi}\oint_{\partial\Omega}\Gamma(\frac{\exp(-\int_{-\infty}^{x}{\sinh(L(x,\dot{x},t))\mathrm{d}t)}}{\sqrt{\bar{E}^2-\sum\limits_{i}{k_iL_i(x,\dot{x},t)}}})\mathrm{d}x^n=what \]