改进排版

This commit is contained in:
2025-02-23 20:51:53 +08:00
parent 2bf0000c22
commit 791c17ebdf
21 changed files with 1946 additions and 1827 deletions
@@ -134,7 +134,10 @@ d^2\Phi=L_r dA_r d\omega_r \cos\theta_r
$$
代入前面的立体角公式可得
$$
\displaystyle{ d^2\Phi=L_sdA_s\cos\theta_s\frac{dA_r\cos\theta_r}{r^2}=L_rdA_r\cos\theta_r\frac{dA_s\cos\theta_s}{r^2}}
\begin{aligned}
d^2\Phi&=\displaystyle{L_sdA_s\cos\theta_s\frac{dA_r\cos\theta_r}{r^2}}\\
&=\displaystyle{L_rdA_r\cos\theta_r\frac{dA_s\cos\theta_s}{r^2}}
\end{aligned}
$$
整理可得
$$