poynting vector是什么意思

用法例句

A method for computing Poynting vector from the steady-state data saved by the software to obtain S-parameters is presented in this paper.

该文利用FDTD软件输出的稳态场分布 ,通过计算坡印廷矢量提取波导的S参数。

,the conventional intensity expression and the z component of the time-averaged Poynting vector,are studied without using any approximation.

基于瑞利-索末菲衍射积分,未使用任何近似,对非傍轴矢量光束的两种光强表示式,即传统光强公式和时间平均坡印廷矢量的z分量进行了研究。