微分

In the third chapter, I first gain the equation of the large deflection considering the plate that has original deflection, that is the equation of the compatibility and the bend deflection of the plate which has the effect of initial curvature.

第三章中首先叙述了考虑初挠度的薄板的大挠度微分方程，即相容方程和板的挠度方程、得出膜应力方程，再通过瑞次法求解板的挠度方程，得出在有初挠度情况下。

The research of delay differential equation is very important in theory and in practice.

时滞微分方程的研究无论在理论上还是在应用上都有十分重要的意义。

Therefore, the existence of periodic solutions for the Hamiltonian system and its equivalent differential delay equation is established.

从而建立哈密顿系统以及与之等价的时滞微分方程的周期解的存在性定理。

How to solve linear delay differential equation plays a very important role in dealing with some biological-mathematics issue.

在解决一些有关生物数学的问题时，经常会遇到求解具有延迟的微分方程。

At the same time, the AH-stability of θ-methods for the linear delay algebraic-differential equation is derived.

在对线性延迟微分代数方程θ-方法的AH-稳定性的研究中，给出了方程解析解渐近稳定的一个充分条件。

The stability of composite θ-method for stochastic differential delay equation was studied.

摘要研究了随机延迟微分方程复合θ-方法的稳定性。

This paper studies oscillation of the solutions of hyperbolic partial differential equation with continuous delay argument.

研究了一类具有连续时滞的双曲型偏微分方程？？

The delay differential equation is an important offshoot of modern applied mathematics.

结论时滞微分方程是现在应用数学的一个重要研究课题。

In the second chapter, we study an infinite delay differential equation, the system was widely applied in the biology, neural network and some other fields.

第二章是研究一类无穷时滞微分系统，此系统在生物，神经网络等领域中都有广泛应用。

The second is about delay dependent differential equation.

第二类为时滞依赖于状态的微分方程。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。