微分的

The chromatographic model, composed of a couple of partial differential equations is difficult to be solved.

由于工业色谱模型涉及到一系列的偏微分方程组，求解难度很大。

Establish large deformation model of pipes under geologic disasters such as collapse and gulch; simulate and validate these formulas, and make certain of pipe' lapse length, and put forward some defendable suggestions.

基于弹性地基理论和弹性梁挠曲理论建立了埋管在坍塌/冲沟地质灾害作用下的变形微分方程，导出了大变形分析模型；以西气东输工程用管为例，由计算机仿真验证了公式适用性，确定了管道失效长度并提出了预防建议。

A composite friction material consists ofthe mixture of many powdered granular and fibered materials.

分析归纳了粉体物料混合过程和混合机理，提出相对流动混合，撞击破碎混合，吸附、扩散和静电吸引混合的主要混合机理，分析了粉体造粒机理，以复合摩擦材料造粒过程为例，分析归纳了干混合预先成核、微分空穴填充、粘结和破碎、包围和磨碎、捏合与撕分、滑移填充、塑性流动填充、滚制与墩圆颗粒增

The electrochemistry behaviors of gingerol were tested with differential pulse voltammetry and cyclic voltammetry in this article.

采用微分脉冲法和循环伏安法对姜辣素的电化学行为进行了探讨。

The dynamic equations of helically buckled pipe string in vertical wells are a group of high order nonlinear ordinary differential equations, which describe the axial force distribution and deformation behavior of pipe.

描述垂直井中螺旋弯曲管柱轴力分布和变形行为的力学方程是一组高阶非线性常微分方程组。

In this model, the monitored acoustic emission information is changed into prediction data based on the gray theory, and the Prediction data are trans-formed into an essential format of cusp catastrophic model via the least-square principle curve fitting and the differential coefficient homeomorphous change.

首先运用灰色理论对声发射监测数据进行处理，得到预测数据，运用最小二乘曲线拟合展开，再通过微分同胚变换，转换为尖点突变模型的基本形式，从而建立了灰色突变预测模型。

We present a homomorphic partial differential equation filtering method for interferometry fringe patterns.

本文提出了电子散斑干涉条纹图的同态偏微分方程滤波方法。

We prove the existence of integral solutions for semilinear integrodifferential equations with nonlocal conditions in Banach spaces.

运用预解算子理论和Schauder不动点定理，在Banach空间证明了一类非局部半线性积微分方程积分解的存在性。

This chapter deals with the existence of mild and strong solutions of a nonlinear integrodifferential systems of Sobolev type with nonlocal condition in Banach spaces.

本章在Banach空间中，用算子半群理论以及Schauder不动点定理讨论了一类非线性Sobolev型积分微分方程，在非局部初始条件下，适度解和强解的存在性。

Single precision of the Runge - Kutta - Kiel in the initial conditions for n simultaneous first-order differe...

单精度的龙格-库塔-基尔法在初始条件下求解n元联立一阶常微分方程组；很好。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。