查询词典 beam splitter

In this paper the new type structure has been calculated and analyzed by using finite element method and common software ANSYS. This paper also has designed the other wharf components just as horizontal beam, deck, horizontal contact beam, arc foot, berthing member, platform and pile foundation.

同时，本文也对该大跨度码头的其他构件如横梁、面板、横向联系梁、拱脚联结台、靠船构件、桩台、桩基础进行了结构设计，并模拟出了这些码头构件及码头整体结构的三维立体图。

Secondly, in the dissertation, the theories and methods of calculation on bridge deck system were discussed, and bridge deck system simplified as a beam was analyzed with the theory of elastically supported continuous beam and the method of deformation compatibility; through the theory of orthotropic plate being applied to analyzing the bridge deck system which was assumed an elastically supported continuous plate, certain theoretical derivations were made and some calculation formulas were given.

其次，本文研究论述了桥道系的计算理论和方法，将桥道系简化为梁，利用弹性支承连续梁理论和变形协调法进行分析；把桥道系视为弹性支承连续板，利用正交异性板理论进行分析，作了一定的理论推导，并给出了相关计算公式。

The proposed method directly gets deflection and moment of beam structures at the same time, and overcomes the shortcoming of low accuracy in beam moment calculation of displacement FEM.

BSWI混合有限元法可同时直接求解梁结构的挠度和弯矩，克服了位移有限元法弯矩求解精度不高的缺点。

It is found that the changes resulted from the inclination of the moving mirror consists of three parts: the stationary OPD due to the optical beam deflection,the offset OPD due to the different ray in the direction perpendicular to the optical axis,and the offset from the center of the deflected beam to the optical axis.

结果表明，光束偏转带来的误差分为三部分：光束偏转导致整体增加的恒定光程差，垂直光轴方向因不同光线而引入的偏移光程差以及偏转光束中心相对于光轴的偏移量。

To suppress the noise which caused by the fuzzy character of XLPE sample, the size of the photodetector was determined based on the analysis of the light intensity distribution in the spatial frequency plane when the laser beam passing through the sample was collected by lens. A series of detectors were designed to eliminate the time response decreasing effect caused by the increasing of the detector size. The developed laser system could resolve defects of 40 um diameter in XLPE tape with the 120um diameter and 400Hz scanning laser beam. after above results was used.

为了消除由于XLPE材料光弥散效应引起的信号噪声对信号幅度测量的影响和提高测试速度，研制了阵列组合式光电探测器，理论分析和实验验证都证明了该探测器有较好的频响特性和较低的噪声水平，应用这两项成果组成的信号系统及微机数据采集电路可在400Hz扫描频率下，扫描宽度所限制的120μm光束直径下获得40μm的测量分辨率。

And mechanical characteristics of copulae of steel-concrete composite beam,which has different space and rows of shear connectors,different ratio of lateral direction reinforcement and different height of steel beam,is calculated and analyzed.

利用大型通用有限元软件 ABAQUS 对叠合梁结构进行了数值模拟，计算分析了不同剪力键布置、横向钢筋配筋率和钢梁高度时叠合梁接合部受力特性，为钢-砼叠合梁的设计提供参考和依据。

The signal processing of narrow-beam radars are in the given direction to which the beam is pointing, so the received interferences and clutters only come from that direction and thus the signal-to-noise ratio is relatively high, and target detection is only need to be performed on the range-Doppler spectra, which has a relatively low demand.

而宽波束雷达则会接收到所有方位上的干扰和杂波，信噪比较低，除了需要在距离-多普勒谱上检测出目标外，还需要分别形成目标的阵列快拍以获取其空间谱估计。

Under the conditions of single—beam and three—beam illuminating measuring point separately and other factors unchanging, the size distribution of standard particle board is measured, which indicates that the result of the measurement of particle size distribution is not affected by the simultaneous measurement of velocity.

分别在单光束和三光束照射测量点，其它条件不变的情况下，对标准粒子板的尺寸分布进行了测量，实验结果表明，粒子尺寸分布的测量结果不受同时测速的影响。

The box beam external dimensions are big , are away from the ground to be high , carries on the dog-legged single shade beam crack detection from the opposite side , the focal distance is long , and is not easy to operate.

箱形梁外形尺寸较大，距离地面较高，从对侧进行双壁单影射线探伤，焦距偏长且不易操作。

Calculation formula of height-span-ration of supported beam can be directly deduced through controlling local stress in the end of the wall beam.

本文作者运用弹性地基梁理论及《砌体结构设计规范》中关于墙梁设计的有关规定，通过控制墙端局部压应力，可直接推导出托梁高跨比的计算公式。

However it can often be frust ating for a child when people are unable to pronounce their name.

但它往往可以令人沮丧的一个孩子当人们无法断言他们的名字。

All these compounds were obtained from this genus for the first time. Compound, 4-cumylphenol, was a new nature product.

所有化合物均为首次从本属海藻中分离得到，其中4cumylphenol为新天然产物。