According to the nonlinear oscillation theory and the obtained equation, the nonlinear characteristics and evolution law of Kunming precipitation anomaly system were studied.
The nonlinear energy integral equation describing the evolutionof ion density has been derived.
导出了描述离子密度变化的非线性的能量积分方程。
3
An equation for describing the evolutionof agricultural machinery products possessions was established and then its nonlinear chaos property with the theory of stability was pointed out.