查询词典 beams

Based on the defined effective Fresnel number of focused beams,the focusing of partially coherent beams through cylindrical aberrated lens was studied,and the simple formula of relative focal shift was derived.

华侨大学电子科学与技术系光学与光子学研究所，福建泉州 362021 华侨大学电子科学与技术系光学与光子学研究所，福建泉州 362021

The method of calculating the bearing capacity of Normal Section in external unbonded prestressed beams is also suggested, which can be used to calculate the strength of concrete beams with straight unbonded tendons prestressing tendons and draped prestressing tendons with one or two support deviators.

计算结果表明，公式计算值与实测值接近，所建立的公式对直线预应力筋、具有一个转向块、两个转向块的折线形预应力等布筋方式的梁的承载力计算结果是能满足工程需要的。

Through analying controlling methods , the paper uses the method of Grey Forecasting Control to forecast inflection of main beams" deflections , and redacts a program to calculate inflection of main beams" deflections and the elevation of formwork during the construction.

通过分析现有控制方法，提出采用灰色理论预测法对主梁挠度变化进行预测，并用C语言编写了程序以计算施工过程中梁段的挠度变化值。

Secondly, it summarizes the development of cold-formed sections and latest trend about stability of cold-formed beams and purlins. Finally, some possible improvements in stability of cold-formed beams and purlins are anticipated.

其中普通钢结构主要指采用大截面和厚板的结构(因表面涂有防锈漆，俗称&红钢&的结构)；而轻钢结构则主要指以轻型H型钢或冷弯薄壁型钢作为承重骨架，用轻型板材作围护的结构(图 1 )。

The distributions of stresses and strains on the section of strengthened beam are analyzed. The different formulas for the calculation of internal forces of section are deduced according to the different development stages of strain and a flow diagram for the calculation is established. With the program based on the diagram, the internal forces and some relevant parameters of the strengthened beams are calculated and the main factors which affect the ultimate bearing capacity of the beams are discussed.

分析中，着重研究了加固梁的截面应力、应变分布特点及可能出现的变化情况，给出了截面应力合力的计算公式并给出了计算框图，依据框图编程对影响加固梁正截面承载力的相关变化参量进行了计算分析并对影响极限承载力的主要因素进行了分析讨论。

For non-intense beams,particle trajectory can be obtained by multiplying linear transport matrices. For nonlinear transport of intense beams,the influence of space-charge effect on beam transport needs to be taken into account,and self-consistent solution should be derived because of the interaction between charged particle distribution and space charge field. In the program,components and currents are divided into equal intervals,respectively,and each interval is treated as a uniform solenoid field.

程序在计算非强流脉冲束流的线性传输时，粒子的轨迹通过矩阵的直接相乘计算得出；程序在计算强流脉冲束流的非线性传输时，需要考虑束流中的空间电荷效应对束流传输的影响，在束流运动过程中，空间电荷场也在不断地变化，而且粒子运动的轨迹与空间电荷势又是相互依赖的，因此需要求得一个自洽的解，先把元件分成若干均等的区间，把电流分成若干等份，后采用束流电流迭代与元件区间迭代的计算方法。

In fact, there are a lot of shortcomings such as beams and for larger cross-section of the beam, particularly steel-reinforced self-respect a lot, so the installation of steel beams in the beam must be installed after the end of the template, the beam side of the module should be installed in bars Complete collection experience and qualified after installation.

其实这样有很大的缺点，因为针对与梁截面面积较大的梁，钢筋特别密集，钢筋自重很大，所以在梁钢筋安装必须在梁底模板安装后进行，梁的侧模应在钢筋安装完毕并经验收合格后才安装。

Steel beams with web openings in plastic zone will affect the plastic deformation capacity and bending and shear strength of the steel beams.

钢梁腹板开孔位处塑性区域将影响钢梁的塑性变形能力与钢梁的挠曲与剪力强度。

For example, it have not been pointed out whether the wavelength of signal light beams would effect the time of quasi-steady solitons; it have not been noticed that the electric field preserved in crystal might effect on forming photovoltaic solitons; it have not been reported the action of background light beams in forming screening-photovoltaic solitons and whether it can form polychromatic SPS, and so on.

例如准稳态孤子的形成过程中探测信号光的波长对孤子存在时间的影响；光折变晶体中原先驻留的内电场对形成光伏孤子的影响；背景光在形成屏蔽-光伏孤子中所起的作用以及复色光能否形成屏蔽-光伏孤子等等都未进行研究。

The Gaussian Schell-model beam and fully coherent ChG beams can be treated as special cases of partially coherent ChG beams.

高斯－谢尔模型光束和完全相干ChG光束可作为部分相干ChG光束的特例处理。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。