对带色散项非线性控制方程进行了研究，用“参数微分法”，得到其近似解。
This paper studies nonlinear wave equation with dispersion items, reaching an approximate Solution in the method of Parameter differentiation.
对一类带耗散项非线性波动方程进行了研究，用“参数微分法”，得到其解析近似解。
This paper Studies nonlinear wave equation with dissipation items, reaching an approximate solution in the method of parameter differentiation.
用差减微分法对TG和DTG曲线进行了处理，得其第一和第二阶段热降解动力学参数。
The parameters of heat -degradation dynamics in the first and second stages are gained by dealing with the TG and DTG curves using differential subduction method.
针对上述情况出现了很多带电测量输电线路零序互感参数的新的理论和技术，包括干扰法、增量法、微分法、积分法等。
Theories and technologies of live line measurement have appeared, including the interference method, the incremental method, the differential equation method and the integral equation method.
采用微分法和积分法来确定动力学参数。
And the kinetics parameters were determined by differential and integral methods.
本文根据常微分方程参数反问题的数学理论，将正交化方法同有限差分法结合用于确定水质模型参数，并与正则化方法、最速下降法和共轭梯度法作了比较。
The comparison of the calculation results show that orthogonal rule method is fast, simple and reliable, and is applicable to the calculation of the water quality modeling parameters.
本文根据常微分方程参数反问题的数学理论，将正交化方法同有限差分法结合用于确定水质模型参数，并与正则化方法、最速下降法和共轭梯度法作了比较。
The comparison of the calculation results show that orthogonal rule method is fast, simple and reliable, and is applicable to the calculation of the water quality modeling parameters.
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