查询词典 on the beam

Unbraced Length Ratio means if the distance between lateral bracing. If the ratio is small, the capacity of the beam might reach 0.66Fy. If the ratio is small enough, it will reach 0.66Fy. On the other hand, if the ratio is high, then then capacity is low.

答：应该是平面外支撑的问题吧， Unbraced Length Ratio中的数值并不改变程序计算出来的结构的内力，但是却能改变杆件的承受力和变形的能力，数值越少，就是说不支撑的距离越短，承载能力也越强，那么 ratio 肯定就越小，结构会越稳定。

In order to do this, the width of narrow annuli cooling channel of beryllium beam pipe was designed by optimization method, the theoretical analysis and finite element method were used, then the optimal width was chosen, the influence of concentrated heat on the temperature of inner and outer wall was studied, and the optimal working velocity of cooling fluid was given.

本文结合理论分析和有限元数值模拟对束流铍管的冷却环形窄通道尺寸进行优化设计，确定了窄通道最佳间隙，研究了集中热负荷对内外壁温度场的影响，并确定了冷却液最佳工作流速。

Based on the theory of"S-R"stability for the voussoir beam, the paper analyses the mechanics boundary condition, the distribution features of displacement and stress fields, the relationship between working resistance of supports and roof-to-floor convergence, roof stability in tip-to-face area in fully mechanized mining with sublevel caving etc.

论文视直接顶为可变形体，得到直接顶岩层破断角的大小和直接顶的强度及高度有关，传统的P一Δl双曲线关系并不适用于直接顶的高度成倍增加以后的情况。

The discussion of hardware design of the unit are focused on the three respects: the measurement and the control of warp tension, the driving of the warp beam.

本文综述了前人在织机送经研究领域的成果，讨论了新型织机理想送经机构的特性和电动送经装置的模式，提出了用步进电机作为送经电机、单片微机作为控制器的新型电动送经装置方案，从经纱张力感测、控制和织轴驱动三个方面论述了该电动送经装置的硬件设计方案。

So in that kind of a snowing day, I replied to my Nver Shen, holding paddle boating, long hair, body in white, hair-beam gold belt in the microwave, undulating surface of the lake, in the distant snow of the set off, I floated pass away, Huanhuandijiang the boat to stand on the shore have been stunned by the Jing Gege.

于是在那样的一个飘雪的日子，我回复了我的女儿身，持桨荡舟，长发披肩，全身白衣，头发上束条金带，在微波荡漾的湖面上，在远处白雪的掩映下，我飘然而立，缓缓地将船划向站在岸边的已经目瞪口呆了的靖哥哥。

Finally, an example of the cantilever beam is used to illustrate the feasibility of the method given, which shows that the effect of the elastic Young's modulus on the eigenvalues is greater than that of the mass density.

通过一个悬臂梁的算例表明，弹性模量对振动控制闭环特征值的影响要大于质量密度的作用，表明了文中方法的可行性。

After analyzing the working characteristics of the laser crystal,taking into account of the aeolotropism of heat conduction of Nd:GdVO4 crystal,the general analytical expressions of the temperature field and thermal distortion field of Nd:GdVO4 crystal end-pumped by super-Gaussian beam were obtained based on the Poisson equation for aeolotropic heat conduction.

通过激光晶体工作特点分析，考虑到Nd：GdVO4晶体热传导各向异性的特点，采用各向异性传热的Poisson方程，得出了超高斯光束端面抽运Nd：GdVO4晶体温度场以及热形变场的一般解析表达式。

Finally, the free vibration analysis of the 3-D beamlike lattice girders is performed using the derived property matrices of the 3-D Timoshenko beam elements and the influence of flexural rigidity, shear deformation and rotary inertia of the constituent structural members on the free vibration characteristics of the "triangular-type" and "rectangular-type" 3-D beamlike (Vierendeel and X-braced) lattice girders is studied.

最后，本文利用上述三维Timoshenko梁元素的性质矩阵，来进行三维构架的自由振动分析，并探讨各梁元素的挠曲刚度、剪切变形与旋转惯性，对三角形及四方形的梁形格状桁，自由振动特性的影响。

The influence on the diffraction efficiency and the noise of diffusion was discussed when use dimethylbenzene and saturated sucrose solution as matching liquid. And the angular excursion of the reconstructed light beam caused by the two kinds of matching liquid was discussed in this paper.

对使用二甲苯及饱和蔗糖水溶液作为匹配液对漫射噪声及衍射效率的影响，以及带来的再现光角度的偏移进行了讨论。

In the first, the length of every poleof the leading four-bar mechanism are determined bypainting,secondly, the base of mechanic model ofsupport-surrounding, the mechanism and loads on the support isdecided. The next work, with the condition of the design, the mainmechanics of hydraulic support is analyzed and calculated by planeand spatial model. Finally, the under frame, top beam cave shield,wrists and hydraulic column are analyzed by calculation. And drawout all the process drawings.

首先，通过作图确定支架的四连杆机构各杆系的长度；然后，以力学模型为依据，分析了液压支架的顶梁、掩护梁上载荷的作用机理，得到了较为合理的支架载荷的计算公式；其次，结合设计的支架，从平面和空间两方面对支架主要结构件进行受力分析；最后对支架主要结构件、连接销轴进行强度效核，并画出所有的机械图。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐