Kirhhoff's law

The discussion about the principle of Huygens-Fresnel and Kirchhoff s diffraction formula;

惠更斯-菲涅耳原理和基尔霍夫衍射公式的讨论

And then the motion equations of the system of a bladed disk are solved by Gill method.

采用基尔法求解错频转子系统的运动方程,获得了此多自由度系统的动态响应,并对不同错频方案进行了对比分析。