查询词典 beam splitter

In designing the flexural reinforcement for the major moment for a particular beam for a particular section, the following steps are involved:· Determine the maximum factored moments · Determine the reinforcing steel Determine Factored Moments In the design of flexural reinforcement of moment resisting concrete beams, the factored moments for each load combination at a particular beam section are ob- tained by factoring the corresponding moments for different load cases with the corresponding load factors.

在设计一个特定部分，特别是梁为关键时刻抗弯增强，下面的步骤涉及：·确定时刻的最大因素·确定钢筋确定的因素时刻在目前的抗弯曲钢筋混凝土梁的设计，在特定的梁截面为每个荷载组合的因素是肥胖的时刻，由保理与相应的负载系数不同的负载情况下，不引起相应的时刻。

In designing the flexural reinforcement for the major moment for a particular beam for a particular section, the following steps are involved:· Determine the maximum factored moments · Determine the reinforcing steel Determine Factored Moments In the design of flexural reinforcement of moment resisting concrete beams, the factored moments for each load combination at a particular beam section are ob- tained by factoring the corresponding moments for different load cases with the corresponding load factors.

在设计的抗弯加固梁为一个特定的时间为某一特定部分，下面的步骤被涉及。·确定时刻的最大因素·确定钢筋决定因素的时刻在设计的弯加固混凝土梁的时刻抵制因素的时刻，每个荷载组合作用在某一特定的梁截面——同时运用保理的指挥不同载荷工况相应的时刻与相应的荷载等因素的影响。

The thrust coefficients and propulsive efficiency of a two-dimensional flexible fin with heaving and pitching motion were computed using FLUENT. The effect of different locations of the pitching axis on propulsive performance was examined using three deflexion modes which are respectively, modified Bose mode, cantilever beam with uniformly distributed load and cantilever beam with non-uniformly distributed load.

利用FLUENT软件数值计算了二维柔性鳍作升沉纵摇运动时的推力系数及推进效率，探讨了修正Bose变形方程、均匀载荷和非均匀载荷悬臂梁变形方程等三种柔性模式下纵摇轴位置对摆动鳍推进性能的影响，其中纵摇轴在尾缘处能够获得更大的推力，而最高的推进效率分别对应修正Bose模式下纵摇轴距首缘1/3弦长处和悬臂梁柔性变形模型下纵摇轴距首缘2/3弦长处。

ZnO thin film ; molecular beam epitaxy ; laser molecular beam epitaxy

ZnO薄膜；分子束外延；激光分子束外延

In the antenna system, a dual-reflector antenna with two paraboloids is fed by the beam waveguide feeding system formed by three reflectors, realizing quick scanning of the beam.

该天线利用由三面反射镜组成的波束波导对一个由两个抛物面镜组成的双反射面天线进行馈电，实现了波束的快速扫描。

The nonlinear laser beam propagation in high power laser driver and the influence of the smallscale selffocusing and phase noise on beam quality in disk amplifier have been analyzed by a linear model.

建立了一套线性的近似分析方法，研究高功率激光驱动器中强激光传输的小尺度自聚焦效应和相位噪声对光束传输和光束质量的影响，给出了系统噪声强度、B积分值与光束近场调制对比度之间的定量关系。

The implementation of the cross section function of the beam is a difficult poi- nt in the optimum design of structures consisting of bar, membrane and beam elem- ents.

梁截面函数的处理是杆、膜、梁组合结构优化设计的一个难点。

Based on the instrument of H/HCS-017 Multi-Beam Echo Sounder developed independently by us,this dissertation studied aspects of different kinds of techniques related to multi-beam surveying.

本文在我国独立开发的 H/HCS-017 型条带测深仪产品的技术基础上，对有关的多波束测深技术进行了研究。

Consequently the beam transmission problem is solved well. The general design curves of microwave plasma drift tube are developed by the theory and they can be used for development of the plasma microwave devices. Ion channel, as a important phenomenon in the interaction between electron beam and plasma, is first introduced into the study of PASOTRON, to replace the concept'plasma channel'used in general plasma microwave devices. A model is created to describe the channel performance. The channel is not stable, it is oscillatory and the oscillation frequency is larger than that of plasma.

作为电子束与等离子体相互作用的一个重要现象，本文首次将离子通道的概念引入到了PASOTRON的研究中，以区别常规的等离子体通道概念，并通过建立的模型推出离子通道并非一稳定规则的通道，而是具有振荡特性，振荡频率高于等离子体频率，推出了当满足一定条件时束外可能没有电子而成为纯的离子通道，这种状态对微波器件有重要的价值。

An ultrashort pulsed-laser beam is composed of a series of monochromatic continuous waves. According to Parseval theorem, the time-averaged intensity can be calculated by the sum of the intensity of these monochromatic continuous waves. Then we derive an equation to study Talbot effect of a grating illuminated by an ultrashort pulsed-laser beam.

我们采用了频谱分析法，即把超短脉冲光波看成是由一系列的单色光波组成，根据Parseval定理，光栅Fresnel衍射的平均光强由一系列的单色光波的衍射光强之和而求得，这样我们给出了一种分析光栅在超短脉冲光波照射下泰伯效应特性的方法。

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。