查询词典 a beam of light

The present invention relates to a device (200) for electrically controlling shaping of a light beam.

本发明涉及一种用于电控光束整形的装置(200)。

Wang's experiment used a very different approach, depending on the way that a light beam is changed by passing through a specially prepared tube of caesium gas.

王的实验采用了相对不同于Nimtz的方法，他测量的是光束在通过一个特别预备的充满铯气体的管子时候的变化。

Around the dark core of an optical vortex, the energy flow carried by the light beam is like a spiral staircase, flowing in a clockwise or counterclockwise direction.

绕着光涡旋的黑暗中心，光束携带的能量流就像螺旋梯，沿着顺时针或者逆时针方向流动。

The optical pickup apparatus is provided with the objective lens for applying a light beam to the signal recording layer, a lens holder supporting the objective lens, and a coating layer formed on the disk side end face of the lens holder.

该光拾取装置包括物镜，使光束作用于信号记录层上；一透镜支架，用于支撑物镜；一涂层，它形成在透镜支架的盘侧端面上。

The incident angle of parallel light beam is hard to measure accurately in a large measurement range.A measurement method based on the optical vernier measuring principle,which is more accurate,is presented in this paper.

为解决平行光入射角度精确测量时，很难同时实现高精度和大量程两方面的测量性能要求的问题，提出了一种基于光学游标测量原理的大量程条件下的高精度平行光入射角度测量方法及测量装置。

Place the specimen in the spectrophotometer with its cylindrical axis parallel to the slit and in such a way that the light beam is perpendicular to the surface of the section and that the losses due to reflection are at a minimum.

将样品放入分光光度计，使其圆柱轴与狭缝平行，这种方式可以使光垂直照射在样品的表面上并使光反射的损失最小。

And Einstein's Theory of Relativity was preceded by one of his famous "thought experiments," in which he imagined himself riding a light beam into outer space while holding a mirror in front of his face.

爱因斯坦的相对论也来源于他的一次著名想象试验，他假想沿着一条光柱达到外太空的同时，自己面前始终有一面镜子。

We noted that under the conditions of centrifugal acceleration on the rotating platform, a light beam would appear to follow a curved path.

在一个转动平台上的离心加速度情况下，一束光将显示出以曲线前进。

The beam quality of a LD pumped Nd∶YAG laser is measured with CCD camera system. The background characteristics of the CCD system and the influence of the size of integral box upon measurement results are investigated. The following conclusions can be derived form experimental results:(1) Background is strongly depend upon exposure time and pixel binning,while temperature has an ignorable effect upon it,whether with or without ambient light.(2) A 5%-cut is the minimum value in order to get a reasonable result.

采用CCD系统实验测量了LD泵浦Nd∶YAG激光器的光束质量参数，研究了CCD系统的背景噪声特性和积分区域选取对光束质量参数测量的影响，从实验数据中得到以下结论：（1）在有、无背景光两种条件下，背景记数强烈地依赖于曝光时间和像素的合并，温度影响可以忽略不计，（2）为获得M2合理的测量结果，至少要选择5%积分区域。

Based on the scalar scattering theory,a mathematical model of the light scattering intensity distribution of laser beam on the back focal plane of Fourier lens by a rough surface is established by means of the probabilistic-statistical method.

本文以标量散射理论为基础，用概率统计方法建立了粗糙表面的光散射强度在傅氏透镜后焦面上的分布的理论模型，采用镜反射方向的光强与某一散射方向的光强之比来计算R_q值的方法，导出了理论计算公式。

Do not gum up the work by telling mother what we are going to do .

别告诉母亲我们要干的事，那会把事情搞糟的。

In recent years, application of the partial prestressed concrete beam s is developed.

近年来，随着部分预应力砼梁应用的推广，发现我国规范所采用的名义拉应力法的计算结果不稳定。