Deprecated: Creation of dynamic property Typecho\Widget\Request::$feed is deprecated in E:\CloudMusic\VSCode\Home\Apache24\htdocs\var\Widget\Archive.php on line 246
https://dhui626.github.io/index.php/archives/6/ 行间公式测试：$$a + \frac{|ac| \vec{n_1}+|ab| \vec{n_2}}{2 sin\theta}$$行内公式测试：其中 $\vec{n_1}$ 和 $\vec{n_2...