The symmetry algebras of 1 + 1 dimensional nonlinear evolution equation arising from the motion of plane curve in affine geometry are systematically studied.
系统地研究了来自于射影几何中平面曲线运动的1 + 1维非线性方程的对称代数。
An equation for describing the evolution of agricultural machinery products possessions was established and then its nonlinear chaos property with the theory of stability was pointed out.
该文建立了描述农机产品社会拥有量的演化方程，并指出该方程具有非线性混沌特性。
According to the nonlinear oscillation theory and the obtained equation, the nonlinear characteristics and evolution law of Kunming precipitation anomaly system were studied.
根据非线性振荡理论和昆明地区的非线性振荡方程研究了昆明地区降水距平率系统演变的非线性特征及其演变规律。
The nonlinear energy integral equation describing the evolution of 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。
WaxmanSmits (WS) equation is an evolution of Acrhie equation for shaly sands, and it is a nonlinear equation.
方程是阿尔奇方程在泥质砂岩地层中的推广，W-S方程为非线性方程。
Based on the nonlinear Schr? Dinger coupling equation, the impact of input power of soliton in the Photonic crystal fibers on the pulse evolution is studied by numerical simulation.
基于耦合非线性薛定谔方程，通过数值模拟，研究了光子晶体光纤中孤子脉冲的输入功率对脉冲传输的影响。
From the nonlinear Schrdinger equation of beam propagating in Kerr absorbing medium, a set of evolution equations describing Gaussian beam waist radius have bean deduced.
由光束在克尔型吸收介质中传输的非线性薛定谔方程出发，推导了高斯光束注入介质后满足的耦合方程。
From the nonlinear Schrdinger equation of beam propagating in Kerr absorbing medium, a set of evolution equations describing Gaussian beam waist radius have bean deduced.
由光束在克尔型吸收介质中传输的非线性薛定谔方程出发，推导了高斯光束注入介质后满足的耦合方程。
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