查询词典 solid geometry

Had determined the rubber aerocyst model and the material"s parameter, analyzed the change of the curtain line geometry characteristic during the operation process of air spring with the mechanics performance change as well as gas solid coupling between the gas unit and the rubber aerocyst wall with the non-linear finite element analysis.despite of the influence The rubber piles did to landscape orientation rigidity and the perpendicular rigidity, more importantly, it could temporarily support the vehicle"s body when the spring capsule leaks air or bursts, enable the vehicle has a good traffic safety, this article has also carried on the detailed analysis about it.

橡胶堆除了对垂向刚度和横向刚度有影响外，更重要的是，当空气弹簧胶囊漏气或破裂的时候，可以暂时地起支撑车体的作用，使行车安全有了保障，本文对此也进行了详细的分析。

A 3-D solid unit cell geometry model is developed, the characteristics of geometry are studied and yarn-jamming condition is discussed.

该几何模型考虑了纤维束在内部、边界及边角的不同交织方式，纤维束在整个编织过程中的连续性，保证了三维编织复合材料的结构完整性。

Solid geometry is preferred, but often a surfacing package can create a complex blend that a solids package will not handle.

立体几何是首选，但往往是表面封装技术，可以创建一个复杂的混合的固体包将无法处理。

This article starts with the description of the current situation of students' learning on solid geometry, gets such a conclusion that it is necessary to cultivate their capability of spatial imagination.

本文从学生学习立体几何的现状出发，得出空间想象能力急需培养的必要性。

According to the proportion of solid geometry of a shape to the formation of the xuetie has a good explanation of ink and cleaning.

按这栽比例干系酿不败的不平背众众不神状才能使网穴具有精良的释不朱性和冲洗性。

The reserve calculation methods used in the production units at present are mainly the traditional ones based on solid geometry,namely cross-section method or geological block method.

目前，在实际生产单位所采用的储量计算方法主要是基于立体几何的传统方法，即剖面法或地质块段法。

The space vector quantity introduces solid geometry, has produced very heavy impact and influence to traditional educational pattern and course structure, many people have carried on a large amount of theory study at home, but lack and pay close attention to the positive research to first line teacher and student.

空间向量引入立体几何，对传统的教育模式以及课程结构产生了很大的冲击和影响，对空间向量与立体几何结合的重要价值和作用得到了数学教育界的普遍关注，国内有不少人进行了大量的理论探索，但缺乏关注对一线教师与学生的实证研究。

changing ; unvariable ; solid geometry ; folding question ; the method of solving a problem

本文拟从以下四个方面探求折叠问题的解题思路。1立体几何中自身的线面关系问题1.1抓住折叠前后不变的

Overall speaking, the counter-examples could be used in the concept change for solid geometry because we've learnt the effectiveness of that the counter-examples deputes the existing concept and stimulates the new concept.

整体来说，反例可用於立体几何概念的改变，因在本研究中看到反例驳斥既有概念和促进新想法产生的效用。

In studies of interaction among pile, platform that above it and surrounding soil, this paper employ the concept of plate element to simulate the loading character of platform, and employ the concept of solid element to simulate the character of pile and soil, using the finite element method after understanding the geometry properties of pile, soil and the platform. Analyzing the loading properties of the three entities above and their deformation, this paper also employ a special element, Penalty Element. The introduction of penalty element of this kind has served to guarantee the join harmony of displacement between solid element and plate element, thereby effectively resolving the join problem between platforms, pile that support it and surrounding soil.Considering significant property difference between pile material and its surrounding soil, there may be much shear stress on their contact interface produced under vertical load, thus causing displacement or fission. Therefore it is necessary to adopt one special constitutive law of this kind of contact interface, which can reflect its feature of loading and deformation thoroughly. On the basis of the deformation feature and constitutive laws of some contact interface obtained by Zhang Dongji and people concerned through some single-shear experiments on contact interface between structure and soil, this paper employ one pile-soil three-dimensional constant thickness contact interface model to simulate the " slide" taken place on the interface between pile and its surrounding soil. With this kind model, this paper has also created one finite element model, which can be applied to perform finite element calculation and analyze the pile-loading feature, and deduced its element stiffness matrix.

在承台-桩-土共同作用中，考虑桩与承台的几何特性，采用有限元方法，用实体单元模拟桩土，用板单元模拟承台，更具体地分析桩和承台的受力特性和变形，而且还采用罚单元—既实体单元与板单元之间连接必须满足变形协调条件，来有效地解决了承台与桩土的连接问题，且在桩土共同作用中，由于桩体结构的材料性能与周围土层性质相差较大，在竖向荷载下有可能在其接触面上产生较大的剪应力从而导致错动或开裂，因此，为了充分反映桩土接触面上的受力及变形特征，应采用一种桩土接触面特有的本构关系，即利用张冬霁等人关于结构与土体接触面单剪试验所得到的接触面变形特征及其本构关系，引入桩-土三维等厚度接触单元来模拟桩与桩侧土之间的&滑移&，在此基础上建立可用于桩基承载性状分析的有限元计算单元模型，并推导出了各单元的刚度矩阵。

If you are unfortunate enough to the lovelorn, please tell me, I will help you out, really, please contact me!

如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。