基本单元

Plate and beam is the element of over head traveling crane. Crack damage of plates and beams is the main fault forms of structure.

板和梁是冶金桥式起重机金属结构的基本组成单元，而这些金属结构的损伤多以板、梁的疲劳裂纹表现其故障形式。

In this dissertation, first, based on theory of cutting tooth about the gleason spiral bevel gear, the equation of meshing in the process of cutting tooth, the surface equation of generating gear as well as the general tooth surface equation of the double circular arc spiral bevel gear, using GB12759-1991 type of double circular arc gear as a basic gear profile, a three-dimension solid model of double circular arc spiral bevel gear which has the good adaptability was carried out by used of Unigraphics software;Second, by researching of the algorithm about contact and collision as well as various contact types based upon Contacting Finite Element Method, a foundation was laid for selecting the contact type in analyzing contact stress of double circular arc spiral bevel gearing;Finally, through the connection port of PARASOLID between UG software and ANSYS/LS-DYNA software, the three-dimension solid model of double circular arc spiral bevel gearing obtained above in UG was imported into ANSYS/LS-DYNA, a finite element analyzing about contact stress of double circular arc spiral bevel gearing was carried out by applying new loading method.

本文首先基于格利森弧齿锥齿轮加工原理及切齿啮合过程中的啮合方程、产形轮齿面方程以及双圆弧弧齿锥齿轮的齿面方程，选用GB12759-1991型双圆弧齿轮基本齿廓为基准齿形，利用Unigraphics软件的建模功能，绘制了有较好适应性的双圆弧弧齿锥齿轮传动三维实体模型。其次，描述了应用有限单元法进行实体接触与碰撞问题算法的公式，研究了有限元分析中的各种接触类型以及双圆弧弧齿锥齿轮接触应力分析中所选择接触类型的依据。最后，通过UG软件和ANSYS/LS-DYNA之间的PARASOLID接口工具包，将UG软件中得到的啮合齿轮模型导入ANSYS/LS-DYNA有限元分析软件，给出一种新的加载方法，进行了双圆弧弧齿锥齿轮传动的接触应力的有限元分析。

The Excel window has some basic components, such as an Active cell, Column headings, a Formula bar, a Name box, the mouse pointer, Row headings, Sheet tabs, a Task Pane, and Toolbars.

Excel窗口有一些基本的组成部分，比如活动单元格、列标、公式栏、名称框、鼠标插入点、行号、表格标签、任务面板、工具栏等。

This paper describes the structure of unit circuits of capacitor high-low adjustor, trend of signal, basic work principle and practical application of whole equipment in flame cutting.

详细叙述其各单元电路结构，信号走向，整体设备的基本工作原理以及在火焰切割中的实际应用。

This paper outlines the basic physics concepts of TOPMODEL and its program structure, and the program structure of single catchments is drawn.

概述以地形为基础的水文模型的基本原理及模型结构，绘制了单元流域计算流程图。

From a reversing standpoint functions are very easy to detect because of function prologues and epilogues.

程序的最基本的构架单元是函数。

This paper discusses the potential of utilizing solar energy technology from several ways:site choosing,sunshine distance,facing,weather characteristics,plane function layout,material and policy,etc.and provides beneficial conditions for making further use of passive solar energy technology in rural residence of severe natural environment.

面对这一问题，我国农业部在&十五&期间实施的&生态家园富民计划&，就是从农民最基本的生产和生活单元内部，挖掘潜力，以可再生能源的科学利用为切入点，引导农民改变落后的生产生活方式，达到增加收入、保护生态环境，实现可持续发展的目标。

Receptive field is the basic structural and functional unit for signal processing in visual system. X cell and Y cell are two main kinds of retinal ganglion cell.

感受野是视觉系统信息处理的基本结构和功能单元。X、Y细胞是两类主要的视网膜神经节细胞。

While the A-91 retains the basic gas-operated, rotating bolt action and a trigger unit design from 9A-91 , it features a bullpup polymer housing, with an integral 40 mm single-shot grenade launcher mounted under the barrel.

虽然阿- 91保留了基本的气，旋转螺栓行动，并从第9A 触发单元设计- 91，它拥有一个不可分割的40毫米单发榴弹发射器，一小斗犬聚合物房屋，安装在桶。

Product color intelligent design and optimization techniques based on genetic andimmunity theory This paper introduces genetic and immunity theory into PCID study, establishes a genecoding principle based on product subassembly, constructs a fitness function of colorschemes according to SCCA model, applies genetic and immunity algorithm to simulate theradiation and convergence process of MT, at last it builds a product color design model.Experiments prove that this method can design and optimize color schemes on its own.

5基于遗传与免疫理论的产品色彩方案生成与优化技术把基因遗传和生物免疫理论引入产品色彩智能设计中，提出以产品组件为基本进化单元的基因编码方法，根据形色耦合美度模型构造了色彩方案适应度函数，综合应用遗传算法与免疫算法模拟色彩设计复合思维的发散和聚敛过程并构建了色彩创新模型，算例表明该模型能解决产品色彩方案的自动生成与优化问题。

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。