Compared with the recursive method based on the relationships between vertices and planes , our method for computer interpretation of line drawings based on the relationships of vertices and straight lines has the advantage that it is easier to obtained the three - dimensional structure of a line drawing from its two - dimensional structure 相对于基于点与平面的相对位置关系解释线框图,基于点与直线的相对位置关系解释线框图具有容易从线框图的平面结构推出其空间结果的优点。
With 8mm mmw integrated circuit , a power amplifier ( pa ) is successfully developed in my project , an researching project of " ten - five " . problems such as the difficulties in devices of small volumes designing and manufacturing caused by high frequency and short wavelength are solved 本文结合“十五”军事电子预研课题,实现了一种基于毫米波mmic功率放大芯片的毫米波功率放大器的研制,以及在此基础上的混合集成高效平面结构的功率合成技术的研究,以进一步提高功率。
On the basis of the discussion of the ecological rehabilitation on subsidence land of coal extraction , the land structures of nourishment , plane and perpendicularity on subsidence area of coal extraction are differently designed . on nutritive structure green crops are mainly common crops , green vegetables , green forage crops and acquatic creatures . on plane structure the center of the subsidence land of coal extraction can be used as fish culture in net cage , the periphery can be established as fish pool and economic crops in water , and the outmost layer can be used as high - yield field , vegetable shed , domestic animal breeding area and fruit - bearing forest . on vertical structure the deepwater area can be established as fish pool and economic crops in water , and the uppermost layer can be developed as acquatic and semi - acquatic crops or dry farming crops 在讨论采煤塌陷地生态复垦的基础上,对新泰市采煤塌陷区生态复垦用地的营养结构、平面结构和垂直结构进行了优化设计.在营养结构上,绿色作物主要是农作物、蔬菜、饲料及水生生物.在平面结构上,在塌陷的中心地带实施网箱养鱼,外围区建立精养渔塘和水生经济作物,最外层生态复垦为高产农田、蔬菜大棚、畜禽养殖区和林果地.在垂直结构上,在积水区建立精养渔塘和水生经济作物,最上层则发展水生、半水生及旱作绿色经济作物
3 . according to specification for the navigation lock , water resources and hydropower engineering specification for design of steel gate , tnech - electric design handbook for hydropower station and with the consideration of the related theories on steel structure , this paper studies the design method and calculation theories of the miter gate . on the basis on above , the plain structure design subsystem is developed with intelligent function 3 、依据现行的《水利水电工程钢闸门设计规范》 、 《船闸设计规范》 、 《水电站机电设计手册》 ,综合相关的钢结构设计原理,研究了人字门的平面结构设计计算方法并研制开发了融入智能因素的人字门平面结构设计子系统。
The main contents are as follows : firstly , the structure and characteristics of aqueduct - stayed are summarized , based on which the structure analysis is presented ; planar structural models are established to simplify the analysis of internal force and displacement of aqueduct - stayed based on moment - distribution theory , the formula to calculate the force of cross section of aqueduct - stayed is derived . the finite element method for framed structures is used to analyze the aqueduct body . and corresponding computer programs are developed 为便于计算,在计算斜拉渡槽的内力及变形时,将空间结构简化为平面结构,分别对槽身横断面及槽身纵向结陶进行计算:以力矩分配法为基础推导了槽身横断面内力的计算公式;运用直接刚度法,编制了杆系有限元程序进行槽身纵向结构计算,并简单介绍与斜拉渡槽相关的刚度法知识以及程序的流程图。
Arcuated built - up system bridges are one of bridge structural styles , which are used extensively at present . on one hand , because of complexity and diversity of this kind of structure , current engineering experiences have not satisfied design requirements no longer . on the other hand , towards this kind of structural system traditional methods simplify complicated structures into planar structures , these methods neglect apparently spatial action among members , especially those primary bearing load members along lateral direction of bridges 拱式组合体系桥梁是目前广泛采用的一种桥梁结构形式,一方面由于拱式组合体系桥梁结构的复杂性和多样性,现有的工程经验已不能满足设计需求;另一方面对于这种结构体系过去的传统做法是将复杂结构简化成平面结构,这种做法显然忽略了构件之间的空间作用,尤其是沿桥横向存在主要承力构件。
This dissertation introduces the latest test and the research findings of the frame structure utilized in the central workshop of firepower power plan by engineering design . this paper introduces the seismic analysis method of vertical frame , horizontal framed bent plate structure and space structure seismic analysis in framed bent structure system . this paper analyzes and researches the design plan of the framed bent structure in the central workshop of fangsheng power plant , selects the most safety , economic and proper structure form according to the result of the analysis and research , mainly analyzes the vibration mode of framed bent structure , period and the structure earthquake response by computer program calculating 本文通过方盛电厂主厂房工程的设计,对火力电厂主厂房框排架结构最新的试验及研究成果进行了介绍;对框排架结构体系中纵向框架抗震分析方法、横向框排架平面结构及空间结构抗震分析方法进行了介绍;对方盛电厂主厂房框排架结构体系设计方案进行分析探讨,并根据分析研究的结果,选择最安全、经济、适用的结构形式;通过计算机程序计算,着重分析框排架结构的振型、周期及结构的地震反应。
Secondly , a geometric nonlinear static finite element analysis program of cables , bars and beams is presented . an incremental iterative method based on the newton - raphson method is adopted here to solve the nonlinear equation . a calculation example is given to demonstrate the necessity of thinking over geometric nonlinear affect 其次,编制了索、梁、杆平面结构系统的几何非线性静力分析程序,计算中采用了基于newton - raphson法的增量迭代法求解非线性方程组,并给出了算例。
On the premise of summarizing former contributions in the field , and considering the universality of the cylindrical space with circular cross - section in industry , the author develop a novel ofpt structure , on which the design theories , numerical simulation , design of experimental system for plane structure , preliminary experiment and design of applied space structure are presented . the main contents of the thesis are that : put forward the novel ofpt pixel distribution and plane - light - path design theories and their empirical formulae . the numbers of the ofs units and their emitting rays can be decided by the requirements of image - reconstructed resolution and the size of the center unmeasured region 本论文在总结前人工作的前提下,充分兼顾了工业中具有圆形截面的圆柱形容器或管道普遍存在的事实,提出了一种新型的光纤过程层析成像结构,并从理论设计方法,具体结构仿真,平面结构实验系统设计,初步实验以及空间结构实用化设计、理论分析等方面进行了研究,主要的创新点在于:提出了一种用于工业过程监测与控制的新型光纤过程层析成像结构设计方法,并推导了该方法的经验公式,该方法主要包括像素分配和平面光路结构设计,可以根据工程应用中图像重建的分辨率和圆形截面非测量区域所占比例的要求,设计所需传感单元的数目和传感单元发射光线的数目;设计了一种新型的光纤过程层析成像结构,并对该结构进行了可行性分析和数值仿真。
The paper establishes planar structural analytical method which is equvalent to spatial structural analytical method by comparing both of the results . based on planar structural analytical method , spacial effects of foundation deformation are acquired approximativly , which provides a practical method . 5 根据空间结构分析结果和平面、空间对比分析结果,建立了与空间结构分析结果等效的平面结构分析方法,利用平面结构的分析方法即可得出近似的地基变形的空间作用效应,为实际应用提供了简化、实用的方法。