primary beam

For the fluorescent X-ray tubes, several spectral distributions of different directions of primary X-ray beam must be determined and then the mean values of these data are calculated in order to obtain the effective spectral distributions.

对荧光X射线管还应测定几个射线束方向的原级谱加以平均求得有效原级谱。

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The fixing of davit and primary lifting beam is the key for assembling the hoisting tool of satellite.

吊块及主吊梁的安装是某型号卫星整星吊具安装中的关键环节。

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Research on computing method and characteristics absolute maximum bending moment on primary beam

主梁绝对最大弯矩的计算方法与特性研究

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Also, the ability, of performing the depth profile slowly allows the near surface of implants and MBE to be accurately portrayed by using Cs~+ and O_2~+ primary ions beam.

如若使用Cs~+和O2~+一次离子束缓慢地进行深度剖析也可以精细地描绘出离子注入及分子束外延表面附近的结构。

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Shear Strength at Primary and Secondary Beam Nodes of Preformed Holes of Composite Frame Structure

迭合框架结构预留洞口主次梁节点的抗剪性能

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And based of analysis the characteristics of primary air cooling dehumidification, by means of heat and mass transfer theory and excel data analysis, this paper designs a calculation method that is beam to determine the dehumidification capacity and handling system of the primary air system.

在分析一次风冷却除湿工作特点的基础上，借助传热传质理论和excel数据分析功能，设计出了判断主动式冷梁系统表冷器除湿能力以及一次风系统处理方式的计算方法。

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Beam Weapon-Your primary weapon for busting through shields.

死光武器 — 击破防御的主要武器.

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The paper emphatically introduces a kind of long span prestressed girders floor system, which differs from general floor structural system designed with regular method. The structural lay outs and the design of primary beam and secondary beam are also introduced.

介绍与传统设计手法不同的大跨预应力次梁楼盖结构体系，并对该体系结构中结构布置、主梁设计、预应力次梁设计予以介绍说明。

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Adaptability Analysis of Primary Beam Theory on Cantilever Box Girder of Sandwich Composite Materials

夹芯复合材料悬臂箱梁初等梁理论适应性分析

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Utilizing the primary equation of beam bending, the original parameter solutions of questions about bending of variable cross-section beams are derived and accurate numerical solutions are got by using the method of cuneiform beam, which can be used for forced-bearing analysis in engineering structures.

利用梁弯曲的基本方程，导出了变截面梁弯曲问题的初参数解，并用楔形梁法求出其精确数值解。可用于工程结构的受力分析。

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To have a high positron yield, it is extremely important to minimize the primary electron beam radius at the positron production target.

为获得尽可能高的正电子（e+）产额，严格控制初级电子（e-）束在e+产生靶上的束半径是至关重要的。

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Minimization of Primary Electron Beam Radius at the Positron Production Target

正电子产生靶上初级电子束半径的最小化研究

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Analysis on the reliability standard of primary beam of plain steel gate

平面钢闸门主梁可靠度校准分析

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Taking structural intensity as cost function, we study the active control of infinite beam and non-homogeneous beam and present the result of active control under the condition of different location of error sensors and different distance between control force and primary force in the beam.

以结构声强为目标函数，对无限长梁和非齐次边界梁进行主动控制研究，给出了不同的误差传感器位置、不同的初级力和控制力之间的位置关系对主动控制效果的影响。

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In consideration of the destructive characteristics of the primary beam of plain steel gate, its destruction is divided into three types: bending, shearing and the combination of bending and shearing. Their reliability check analyses have been made to gain the different reliabilities.

考虑平面钢闸门主梁的破坏特点，将主梁破坏形式分为弯曲、剪切和弯剪复合破坏3种，分别进行其可靠度校准分析，得到不同的可靠度。

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Recent Progress in the Experiment of Primary Cesium Beam Frequency Standard with New Dipole Beam Optics System

铯束基准上使用新二极束光学实验的最新进展

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The result shows that high efficiency can be obtained under appropriate parameter setup. The loss current with respect to primary beam current is less than 1 × 10-4, the efficiency is higher than 99.99%.

结果表明，在合适的参数设置下，相对电流损失小于1×10-4，收集效率达到99.99%。

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The main research work finished in this thesis is as following: ① The long-span prestressed primary beam structure programme and secondary beam structure programme in prestressed primary-secondary beam system are introduced in this thesis.

本论文主要完成了以下研究工作：①介绍了平面柱网大跨度预应力混凝土框架主次梁结构体系中的大跨度预应力主梁结构方案和大跨度预应力次梁结构方案；

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The main work and results in this paper are as follows: 1. The scattering characteristics of a uniaxial anisotropic sphere in a Gaussian beam are developed when the beam propagates nonparallel to the primary optical axis.

论文的主要成果如下：1.研究了在轴和离轴高斯波束正入射各向异性球粒子的散射特性。

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The rigid box-column-and-H-beam joint is the primary way popularly used in steel frame structure.

钢框架是多高层建筑钢结构中主要的结构形式,箱 形 柱与H 型 钢梁刚性连接节点是钢框架结构中最常见的节点形式之一.

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Application of 0.618 Method on Calculating Absolute Maximum Deflection of Primary Beam

计算主梁绝对最大挠度的数学模型与0.618法

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