查询词典 truss

Pre-stressed composite space truss is one of the new kind of space structure systems developed on the basis of prestress and space truss, which consists of steel and reinforced concrete. At present the study in this field is just being begun in our country. Therefore, in this paper static and dynamic performances of pre-stressed composite space truss associated with a practical engineering are studied, in addition, dynamic test on construction site and model experiment are done. Finally, we conclude this structure is well in stress and stiffness and dynamic characteristics.

预应力组合网架是一种基于网架和预应力技术发展起来的由钢和钢筋混凝土组合而成的新型预应力空间结构体系，目前国内在此领域的研究和应用都较少，为此，本文结合实际工程对预应力组合网架进行了静力和动力的分析研究，并作了施工现场的动力测试及模型试验，总结出预应力组合网架受力比较合理，刚度、动力特性好，是值得推广的一种空间结构形式。

The variable geometry truss mechanisms have been studied extensively and systematically by this project. The research plan has been completed all sidedly, and expected results have been obtained. Three new kinds of combination decahedrons and a new class of variable geometry truss mechanism, which is composed of an octahedron and three tetrahedrons connected in parallel form, are proposed. The position analyses for decahedrons, dodecahedrons, triple-octahedrons, combinations decahedron and a new type of structure of variable geometry truss mechanisms are presented by introducing additional extra linear displacement sensors and using resultant elimination and homotopy continuation algorithms. The method of kinematical analysis of variable geometry truss mechanisms is established.

课题组对变几何桁架机构进行了深入的研究，全面地完成了研究计划，取得了预期的成果；提出了三种新的十面体组合机构以及由一个八面体和三个四面体组成的新型变几何桁架机构的结构形式；应用结式消元、附加传感器和同伦方法等提出了十面体、十二面体、三重八面体、组合十面体和新型变几何桁架机构的位置分析方法；建立了变几何桁架机构运动分析的一般方法；建立了简洁的凯恩和拉格伦日动力学的模型；应用有限元和子结构方法，提出了变几何柞架机构弹性动力学模型，导出了逆动力学方程的显式形式；设计和研制了一台可折叠的八面体变几何杵架机构装置等。

The main products are: various kinds of aluminium alloy stage light truss, background truss, layer truss, exhibition truss, movable stage, plexiglass stage, assembled stage, foldable stage, flight case, instrument case, standard case, irregular case and so on. detailed specification can be designed and made by your different requirement.

现公司的主要产品有：各种规格的铝合金灯架、背景架、网架、展览架、活动舞台、有机玻璃舞台、可拆装舞台、可折叠舞台、航空箱、仪器箱、标准机箱及不规则箱等，具体规格可根据客户不同的需求订做和设计。

In study of the truss structural dynamic characteristics analysis, randomness of the structural physical parameters and geomtric ones are all considered. The finite element model of the stochastic truss is built and the random functions of its natural frequencies are obtained by use of the Rayleigh quotient. Employing probabilistic distribution function expression for the random functions, through a series of mathematical processing including determination of limits of integrals, variable substitution etc., the probaabilistic density function for the truss natural frequencies are gained to realige accurate calculation for the reliability of the truss natural frequencies.

考虑结构物理参数和几何参数的随机性，通过构建随机参数桁架结构的有限元模型，利用瑞利商公式获得了结构固有频率随机函数的计算表达式，应用随机函数的概率分布函数表达式，通过确定积分区间、变量替换、积分顺序变换等一系列数学上的处理，获得结构固有频率的概率密度函数，进而实现对结构固有频率可靠度的精确计算。

Study on the selection of spatial truss roof. After analyzing the types of space truss in common use in gymnasium, make sure the factors in selection of spatial truss and do further research of applicability and economy in this paper.

本文对体育馆建筑中常用的空间网架结构形式进行了分析，确定了网架结构在选型时所考虑的多种因素，并对不同类型的网架结构的适用范围和经济性进行了研究。

The role of truss in staggered steel truss system and characteristics of all kinds of truss forms were introduced?

介绍了桁架在钢结构交错桁架体系中的作用及各种桁架形式的特点。

Light wood truss is composed of dimension lumber by metal plate connected joints,the metal plate joint can be a weak part in the truss,so its bearing capacity has a direct relation with the whole truss capacity.

轻型木桁架是轻型木结构中一种常见的结构形式，其节点一般由齿板钉接而成，而该齿板节点可能是桁架的薄弱环节，其承载力决定着整个桁架的承载能力，因此齿板连接承载力的确定十分重要。

The first thing that struck me was that there were three screws in the truss rod cover instead of two.

Jonathan说，最早发现的是Truss Rod档牌上有三个螺丝而不是两个。

The first thing thatstruck me was that there were three screws in the truss rod coverinstead of two.

Jonathan说，最早发现的是Truss Rod档牌上有三个螺丝而不是两个。

The effect of joint deformation to truss displacement: 4 kinds of steel tube truss compute models are established making use of shell elements, truss elements, beam elements and combination of beam elements and truss elements.

采用板壳单元、桁架单元、梁单元以及弦杆为梁单元和腹杆为桁架单元的混合模型等四种计算模型分别建立了一个钢管桁架的有限元模型，计算并整理了各模型下桁架腹杆的轴力及各节点的位移。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了