The capacitance of a metal ball and an infinitely big conductor planesystem is sought out by the method of electrical images.
用镜象法求解金属球与无限大导体平板系统的电容。
2
Nowadays, the analysis on internal force of structure is based on the hypothesis of planesystem, but it can not solve the problem of stereoscopy.
现阶段在工程结构内力分析中，主要是基于平面体系的假设，并不能完全解决结构的空间性问题。
3
According to the essence of Pilot Induced Oscillation (PIO) and the theory of Closed-loop control, the mathematical model of Pilot-Planesystem is set up.