其计算结果将为渐开线齿轮设计、参数优化选择等提供参考数据，同时为齿根应力数值分析提供了新的数学模型。
The result will offer reference data for design of involute gear and optimization of parameter choice, and offer new mathematical model for numerical analysis of root stress.
建立了各种边界条件下考虑井筒储存效应和表皮效应的非线性不稳定渗流数学模型，并用数值法对其求解。
The nonlinear mathematical models with wellbore storage and skin effects under several boundary conditions were established and solved by using numerical methods.
并利用有限差分方法，对温度场数学模型进行数值求解。
Numerical solution is given to mathematical model of formation temperature field by full implicit finite difference method.
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