On the basis of the above results, a variable elastic rubber sealing ring has been designed and made, and it is compared with ordinary rubber sealing rings.
在此基础上，设计加工了可变形弹性密封圈，并和普通胶圈进行了对比实验。
Beginning from the ordinary differential equations of separable variables, several ordinary differential equations of how to apply variable substitution to seek solution were generalized.
从可分离变量微分方程出发，介绍了几类如何用变量代换求解的常微分方程。
Finally, does some simulation studies to the fuzzy controller with variable region that designs for electronic expansion valve, and compared with ordinary fuzzy controller.
最后，对控制电子膨胀阀开度而设计的变论域模糊控制器进行了仿真研究，并且与普通模糊控制器的控制效果进行了比较。
The result shows that it is effective for solving ordinary differential equation with variable coefficients.
结果表明，该方法对于求解各类变系数常微分方程是十分有效的。
The adjoint variable method for design sensitivity analysis of multibody system dynamics based on ordinary differential equations is presented.
基于常微分方程数学模型建立了多体系统动力学设计灵敏度分析的伴随变量方法。
In this paper, we study an approximate solution of the second-order linear ordinary differential equations with variable coefficients.
本文研究了二阶变系数线性常微分方程的一种近似求解方法。
Using method of qualitative theory of ordinary differential equation, studies economic harvesting model with variable price and cost for a single population.
利用常微分方程定性理论的方法讨论了价格成本变化的单种群经济捕获模型。
By the new model, a variable displacement hydraulic pump is simulated by the ordinary hydraulic component with hydraulic resistance, abrupt pressure change and invariable flow.
该模型将变量液压泵等效为液阻、压力突变、恒流源构成的一般液压元件。
The method of variable separation is applied and two ordinary differential governing equations are established and solved.
应用分离变量法，建立并求解了两个常微分支配方程。
Methods in evaluating integrals, some complex variable methods, infinite series, special function, ordinary differential equations, vector and materials, groups and group representations.
计算积分的方法、复数方法、无线级数、奇殊函数、微分方程、向量及矩阵、群论。
We assume that the motion of controlled object is describedby linear ordinary differential equations with variable coefficient, and the final states ofthe system form a convex region of phase space.
受控系统的运动设为变系数线性常微分方程组所描述，而系统的终点状态是相空间内的某一凸性区域。
We assume that the motion of controlled object is describedby linear ordinary differential equations with variable coefficient, and the final states ofthe system form a convex region of phase space.
受控系统的运动设为变系数线性常微分方程组所描述，而系统的终点状态是相空间内的某一凸性区域。
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