微分

First the math theory of machining simulation is studied, and the set structure of NC machining simulation system whose components, including time, input, output and so on, are defined. Hereby we set up the hierarchy structure, the logical structure, the static model and the dynamic model of simulation system. The construction method of sweep entity of cutter and rotation parts is researched, and their differential geometry invariants are calculated. NC code is unscrambled, and the recursion division arithmetic of time segment is put forward, which is the driven data of the movement or rotation parts. The CLDATA should be interference-free. To examine if there is interference between cutter flank and the work piece, an arithmetic that discussed the existence of intersecting curve between them is put forward. To examine if there is interference between two turrets, an arithmetic that discussed the existence of intersection set between two polygons is put forward.

首先研究加工过程仿真的数学基础，然后定义数控加工仿真系统的集合结构及时间集、输入集、输出集等概念，建立加工仿真的层次结构和逻辑结构，阐述双刀车削仿真系统的静态模型和动态模型建立方法，分析刀具扫描体和旋转部件扫描体的建立方法及其微分几何性质；研究NC代码解读技术和双刀加工时间段递归子分划技术，为驱动各仿真单元作数据准备；通过讨论后刀面和工件表面交线的存在性判断刀具后刀面与工件间是否干涉，通过求多边形的交集判断刀架与刀架是否干涉。

Fuzzy control arithmetic with self-tuning function is introduced into the carburizer temperature control system to form an intelligent fuzzy control system.

从而构成了智能模糊控制系统。针对带有自整定功能的模糊控制比例积分微分算法的计算参数多，一般低速CPU不能实时处理的情况。

The differential equations that describe the artificial satellite motion are very complicated, and it is impossible to get the analytic express of solution.

描述人造卫星运动的微分方程非常复杂，不可能给出解的解析表达式。

The associated Euler-Lagrange equation leads to a nonlinear partial differential equation of second order in the wavelet domain.

通过求解该模型的极小化，推导出其相应的Euler-Lagrange方程为小波域中的二阶非线性偏微分方程。

We show that the positive solution of the associated stochastic differential equation does not explode to infinity in a finite time.

文中给出了随机微分方程存在唯一正解，且解在有限时间内不爆破。

7 Matrix Exponentials and Linear Systems The solution vectors of a homogeneous linear system Can be used to construct a matrix = that satisfies the matrix differential equation associated with Eq.

5.7 指数矩阵和线性系统借助等式（1），齐次线性系统的解向量可以被用来构造一个满足矩阵微分方程的矩阵。

Where h and k are the Love numbers appropriate for the satellite, Me is the mass of the Earth, Rm is the radius of the satellite and P20 is the l = 2, m = 0 associated Legendre polynomial.

Me是地球质量，Rm是卫星半径，P20是勒让德多项式在L=2，m=0时的解（相关内容参考这个链接： http：//en.wikipedia.org/wiki/Legendre_polynomials ，它是球对称条件下的常见的微分方程的解——gohomeman1注）。

This paper is concerned with asymptotic behavior for functional differential equations and its use for static neural networks.

本文研究了泛函微分方程的渐近行为及其在神经网络中的应用。

The asymptotic behavior of solutions for a class of delay differential systems was studied.

研究了一类时滞微分系统解的渐近性态。

Under suitable conditions,using the theory of differential inequalities,the existence and asymptotic behavior of solution for the boundary value problems are studied.

适当的条件下，利用微分不等式理论，讨论了原边值问题解的存在性和渐近性。。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。