该模型采用三层平面布置的带电圆盘来模拟雷云空间，雷云静电场的计算采用镜像法。
The model simulating thunderstorm cell by means of three layers plane charged disk, the calculations for thundercloud electrostatic field use mirror method.
将连续法引入机构动力学，研究了平面一般三弹簧系统的静力逆分析，得到了该系统的全部平衡位置。
In this paper, the inverse force analysis of planar three spring system is studied using numerical continuation. All static equilibrium positions of the system is obtained.
对称三层非线性平面光波导的数值计算实例与有限元法的结果完全一致。
Numerical results for symmetric structure are in good agreement with that obtained by the finite element method.
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