改进排版
This commit is contained in:
@@ -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}
|
||||
$$
|
||||
整理可得
|
||||
$$
|
||||
|
||||
Reference in New Issue
Block a user