光束

Fully regarded the piezoelectric effect, the electrooptic effect caused by the applied electric field and based on the equation of diffraction efficiency and Bragg condition, the of between the applied electric field, the writing beam ratio with respect to the writing angles are analyzed.

全面考虑了电场作用下晶体的压电和电光效应，基于衍射效率公式和光栅的布拉格条件，给出了为获得最佳衍射效率比时外加电场及写入光束比与记录角度间的关系曲线。

A rigorous coupled wave theory for the Bragg diffraction of a Gaussian beam in the uniaxial crystal is derived and a group of rigorous coupled wave equations and diffraction efficiency formula are obtained in terms of the proper coordinate transformation and Riemann method .

利用适当的坐标变换和黎曼方法建立了高斯光束在单轴晶体中布拉格衍射的严格的耦合波理论，获得了一组严格的耦合波方程和衍射效率计算公式，讨论了衍射效率随折射率调制量的关系以及波长选择性和角度选择性，同时分析了衍射效率对再现光宽度的要求。

The principle of the two dimensional acoustooptic Q switch is presented,the formulas of the diffraction efficiency and diffraction loss of the AO Q switch with normal Bragg diffraction is derived,the relationship between One dimensional and Two dimensional Bragg diffraction is analyzed.

描述了两维声光Q开关的基本原理，详细推导出正常布喇格衍射的两维声光Q开关衍射效率和衍射损耗的表达式，分析了两维布喇格衍射和一维布喇格衍射之间的关系，并给出了在驱动功率40W、光束直径5mm、光波长1。

In electron storage rings, the interactions by beams with residual gas produce the bremsstrahlung which has not been sufficiently understood and is the main course of the loss of the beam.

由于加速器产生高能粒子，在实际应用中必须面临辐射防护方面的问题。加速器储存环直线节中残余气体产生的轫致辐射是同步辐射装置中光束线防护的重要课题之一。

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。

The photo was created using the centuries-old principle of" camera obscura" after a gumball-size hole was opened in the hangar's wall, allowing a tiny beam of light to enter.

这张照片是使用有数世纪历史的「房」理制造出。一个口香糖大小的洞被开凿在飞机棚的墙壁之中，允许一丁点大的光束进入。

A small television camera tube that forms a charge-density image on a photoconductive surface for subsequent electron-beam scanning.

光导摄像管在光电导表面形成电荷聚集图像的一种微小的电视摄像管，用于以后的电子光束扫描

The results show that the fringe pattern produced by the capillary tube interferometer can be explained by two-beam interference.

对光线追迹模拟，结果表明毛细管干涉仪的干涉条纹的形成可用双光束的干涉来解释。

This beam was to be shot at one of the republic ships and drag it into a Hammerhead-class capital ship, destroying both.

这种光束被射向一艘共和国战舰，并拖拽它撞上了一艘锤头级主力舰，两艘飞船都被摧毁。

A clear image of what might be an alien or ET in a space suit can be seen in one cave painting along with a classical flying saucer shaped UFO that appears to be either beaming something down or beaming something up, in what might be an ancient UFO abduction scenario. A force-field or trail of some sort is seen at the rear of the UFO.

一个清晰的影像可能是一个外星人或ET，著住太空装能在一洞穴画作中被看到，沿着有一只古典的飞碟形状的不明飞行物，它像在以光束射低或射高东西，可能是一幅古代的不明飞行物绑架景况，一力场或某种东西的曳被见在不明飞行物的后方。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。