上微分

According to this result, an optimal procedure can be employed to determine these parameters in the kinematic design of PKM, which enable the desired ratio of workspace volume, well-conditioned dexterity, and desired velocity capability to be simultaneously achieved without occurrence of strut interference.

本文以基于6-TPS Stewart平台的并联机床为研究对象，研究了该类机床数控系统中有关运动控制的一些关键问题，并针对在运动控制中引发的微分运动分析与综合、解轨迹上的非线性特性及其引起的插补原理性误差等并联机床的运动学性能问题进行了研究。

The general principle and the applications of numerical derivative zero crossing method is described for resolving overlapped spectra of binary system.

在简述数值微分零交点法分辨重叠谱的原理基础上，研究了该方法对不同分离度的两组分重叠谱图的分辨效果。

In this paper,using the classification for the point of general surface in differential geometry,a new combination that relies on the type of point on real conicoids is studied,and then can know more about the shape of conicoid.

利用微分几何中对一般曲面上点的分类来研究实二次曲面依点的类型的又一重要新组合，从而对二次曲面的形状有进一步的认识。

We introduce the concepts of differential and integral of fuzzycomplex functions on the space〓,and get their properties.We provethe depictive theorem of differentiable fuzzy complex functions.

在模糊复数度量空间〓上重新引进模糊复函数的微分概念和积分概念，给出了其微积分的基本性质，证明了模糊复函数可微的刻划定理。

The paper studies fault diagnosis technology based on fruticose gas pipe network which is universal in small towns,and gives a particular description of domestic and foreign gas pipe network fault diagnosis technique based on hardware and software currently. The author uses graph theory to build up hydraulic analysis model of natural gas network and presents its solution methods. Besides, the author works out the relation between gas pipe pressure and flux in unsteady condition of fluid flow according to pressure boundary condition and differential equation group, and puts forward fault diagnosis methods and steps of the fruticose natural gas pipe network of middle pressure based on the simplification of this relation.

本文针对小城镇比较普遍的枝状天然气分配管网进行故障诊断技术研究，详细叙述了目前国内外基于硬件和软件的燃气管网故障诊断技术，利用图论理论建立了天然气管网水力分析模型并叙述了其求解方法，根据燃气管内流动的微分方程组和压力边界条件求解出非稳定流动时燃气管道压力和流量的关系，并在对此关系进行简化的基础上提出了基于中压枝状天然气管网的故障诊断方法和步骤。

In thecase of hyperspherical coordinates,the Schrodingerequation for many-electron atom can be changed into asimple second-order coupled hyperradial differentialequation,which indicates that it may be exactly solved.

超球坐标下，多电子原子的〓方程，可化为形式上非常简单的二阶超球径耦合常微分方程，这就预示了严格求解的可能性。

InSection 2,we give several sufficient conditions for the existence of one solution,multiplesolutions and infinitely many solutions of the Sturm-Liouville bvps via the generalizedpolar coordinates.Then in Section 3,the existence of positive solutions are proved undersuperlinearity,sublinearity and many other conditions by a fixed point theorem in cones.Our results have generalized those in many articles.A detailed discussion of periodic solu-tions of a kind of functional differential equations with high-order Laplacian-like operatorcan be found in Section 4 and this subject has not been studied before.

在第二节，我们定义了一种新的坐标变换-广义极坐标，并利用它讨论了p-Laplacian算子和Laplacian-型算子的Sturm-Liouville边值问题，分别得到了存在一个解、多个解、无穷多个解的多个充分条件；第三节研究p-Laplacian算子的Sturm-Liouville边值问题正解的存在性与多重性，采用的是锥上的不动点定理，全面推广了这一方面已有的结果；对目前研究较少的高维Laplacian-型算子及带有Laplacian-型算子的泛函微分方程的周期解问题，我们在第四节做了一些研究，这也是拓扑方法的一个应用。

Firstly, the kinematical parameters of the mechanism are solved with the help of Assur-group method.

在利用杆组法进行运动学分析的基础上完成求解所建立的变系数线性微分方程组。

The topics covered in this course include: unconstrained optimization methods, constrained optimization methods, convex analysis, Lagrangian relaxation, nondifferentiable optimization, and applications in integer programming.

这门课程的主题包括：无限制最适化方法，限制最适化方法，凸分析，拉格朗日松弛法，不可微分函数最适化，以及在整数规划上的应用。

The benzene carbon black, resin pyrotic carbon and graphitized carbons were employed to find the relationships between the carbon structure and the differential capacity, reversible capacity and diffusion rate of lithium intercalation.

我们选用苯碳黑、树脂裂解碳和催化石墨化碳等在结构上有明显差别的碳素材料做研究对象，系统研究了碳材料结构特征与锂在其中的可逆插入微分容量、可逆插入容量、可逆循环性和扩散速率的关系。

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。