子单元

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。

To research the frame as one system and find the congruous pre-tightening load, the finite element analysis models of combined frame are built up with selected Lagrange multiplier algorithm as contact arithmetic and applying pre-tightened force element.

为将机身作为一个系统来进行分析以确定预紧力，选择拉格朗日乘子法作为接触算法，并结合预紧力单元解决组合式预应力机身的有限元建模问题。

This dissertation studies the realization of communication in SCADA, and actualizes configuration of communication COM and unit.

本文主要研究了SCADA系统中远动通信和子站内部通信的实现，以及通信子系统串口及单元组态的实现。

In this paper a method of automatic mesh generation of triangular element is presented by using subdomain structure and isoparametric coordinate transformations for two-dimensional complex connected domain with multidielectric.

本文采用子区域结构，等参坐标变换方法，对具有多种介质的二维复连通区域，给出一种三角形单元的网格自动剖分方法。

The influence of the crystal lattice and geometry of the inclusions on phononic band gaps was studied.

研究了晶格点阵结构和填充物单元形状对声子带隙的影响规律。

The electric control group includes five parts: for mixing and batching, for block machine, for finger car, for cuber and transport system.

电控系统包括5个控制单元：配料搅拌、成型机、子母车、码垛机和输送系统。

Final, improve of beam-pointing drift with digital delayer at elements or sub-arrays is given.

文章也给出了阵列单元或子阵设置数字延迟器后，扫描波束指向漂移改善的分析结果。

In this dissertation, what under consideration is the dipole array.

本论文中考虑的都是偶极子阵列，但是对其他型式的单元组成的天线阵的口面分布的实现，本论文的基本思想也有一定的指导作用。

With Lagrange multiplier ,Dirichlet boundary conditions are imposed along the essential boundaries.

在有限元三维20结点单元构成的空间网格上构建流形覆盖和权函数，采用拉格朗日乘子法施加位移约束条件，推导了分析静态问题的计算列式。

Secondly the sedimentary characteristics of Caledonian strata in Hunan, Guangxi, Jiangxi suggested that there is not discontinuity of facies on both sides of Jiangshan-Shaoxing Fault Zone, which is considered to be Caledonian suture zone of Yangtze Block and Cathaysia Block, but the interdigitation, continuity of facies or assuming the united paleogeographic unit.

得出该结论的证据主要有两方面：①湘桂赣地区加里东期花岗岩体呈面状展布，且地球化学测试结果表明为壳源S型花岗岩，这些特征与洋壳消亡形成的花岗岩体无论在分布特征还是在地球化学特征上都有显著的差别；②湘桂赣地区加里东期地层的沉积古地理特征研究表明在目前多数人公认的扬子与华夏的缝合带，即江绍断裂带两侧的加里东期沉积物不存在两大古地理体系的截然跳相现象，而是表现为两侧沉积相带的指状交叉、过渡或呈现为完全相同、统一的岩相古地理单元。

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。