微分的

On the basis of establishing the differential equations of motion of the pantograph and catenary system, the TSG3 pantograph has been simulated.

在建立弓网系统运动微分方程的基础上，本文对TSG3受电弓几个主要参数进行了模拟计算。

Up to now, finite difference method, finite element method and boundary element method are common numerical methods to obtain numerical solutions of parabolic partial differential equation.

目前求解抛物型偏微分方程的数值方法有有限差分法、有限元法和边界元法等。

The first step of simulation method is to establish the one-dimension parabolic partial differential advection diffusion equation that was used to describe the mass transportation model of air-pollution distribution as a block program model of the controllable plant. Then, applying the Fuzzy logic theory to operate tunnel jet-fans and control the tunnel wind quantity and adjust the wind average velocity would not let the air-pollution concentration over the standard safety value too much.

模拟方式首先将常被用以表示隧道内空气污染物质传理论模式之一维向平流扩散抛物线型偏微分方程式建构成一组可控制对象的方块程式模拟模型，再运用模糊逻辑理论模拟控制喷流式通风机之运转风量来调节隧道内平均风速以控制隧道内空气污染物浓度不至於高过标准安全值太多。

In this paper, we consider lumped mass metheds for parabolic type integro-differential equations.

本文讨论了抛物型积分微分方程的集中质量法。

The implicit or parametric surface has been defined very well in differential geometry.

在传统微分几何中，隐式曲面或参数曲面有完备的定义和计算公式。

The partial derivative of f with respect to x keeping r and z fixed.

函数f对x的偏微分，r和z保持不变。

The partial derivative of f with respect to x, keeping y, and z fixed.

函数f对x的偏微分，固定y和z。

An effective method for solving a partial differential equation of secondary hydrocarbon migration is put forward.

本文给出了一种高效率求解油气二次运移偏微分方程的方法。

A partial differential equation used for the calculation of the grid library, very good with it!

详细说明：一个用来实现偏微分方程中网格的计算库，很好用呀！

The paper focus on the noise suppressing technique based on partial differential equation.

重点研究了基于偏微分方程的干涉纹图噪声抑制算法。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。