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.
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