查询词典 beam splitter

Methods According to the document of ISO/TC172/GW1 N80 about the test principle and the experimental demands of times-diffraction-imit factor M^2, beam diameters in different z places along the light direction were measured using LBA-300PC laser beam quality analyzing meter made in Spiricon Corporation of America. Hyperbolas were fitted utilizing the measured data.

根据ISO/TC172/SC9/WG1 N80文件对M^2因子的测量原理及要求，用美国Spiricon公司生产的LBA-300PC激光束分析仪，沿光传播方向在不同z位置，测出光束宽度，由测量数据进行双曲线拟合，确定束腰直径和远场发射角，计算M^2因子。

The first beam of light impinges upon the reflective element and is reflected to travel in the same directional path as the second beam of light.

第一束光投射到反射元件（14）上并反射回以沿与第二束光相同的方向路径传播。

Mobile positioning system or dynamic table so that the laser head is cutting material in the system-driven subcapital high speed, laser head from the light source and cutting heads, light source produces a very short wavelength focused laser beam, laser beam through cutting heads, vertically focused the material being cut on the surface, heating and melting, evaporation is cutting material, resulting in the closure of Lancing, slotted openings formation pads.

移动定位系统妪动工作台或激光头，使得被切割材料在系统驱动头下高速运动，激光头由光源部分和切割头组成，光源部分产生波长很短的聚焦激光束，激光束通过切割头，垂直聚焦在被切割的材料表面上，加热、融化、蒸发被切割材料，形成切缝，闭合的切缝形成焊盘开孔。

High-precision and extreme-sensitivity beam orienting could be achieved by the application of beam nutating and coherent detecting technologies.

它采用光束章动和相干检测技术，可实现高精度和极高灵敏度的光束定向。

Keywords: Inter-satellite optical communication; beam orienting; Coherent detection; Beam nutating

中文关键词：星间光通信；光束定向；相干检测；光束章动

The simulation shows that the Corkscrew of beam centroid is a low frequency motion which overleaps the average eccentricity between centroid of beam and axis of accelerator and a dispersive effect.

计算结果显示，束心Corkscrew运动是叠加在束心平均偏轴上的一种横向运动，同时也是一种色散效应。

While travelling down the 27 km long LHC beam pipe at a speed close to the speed of light, each of the 2835 proton bunches leaves behind an electromagnetic wake-field which perturbs the succeeding bunches and can lead to beam loss.

当在27千米的LHC管道中以接近光速运行时，每一个质子群都会留下一个影响下一群粒子的电磁场。这可能会导致粒子束的丧失。

The beam is considered one of the most difficult Olympic events,with gymnasts performing pirouettes and backflips on a beam measuring just four inches across.All Nadia did was record three more perfect scores and her second gold medal.-edited by: ycenglish.com

平衡木被认为是最难的奥运项目之一，体操运动员在直径只有四英寸的横梁上旋转和后弓翻，娜迪亚在这个项目上获得了三个满分，夺得第二枚金牌。

Methods: The patients undergoing radiotherapy were postured and the agreement of laser beam mark line before radiotherapy and collimated laser beam line were analyzed.

摆完治疗体位放射治疗前，测量治疗室激光定位线与定位时激光线标记的吻合度。

Finally, through the instance of engineering, we can see that the steel dosage in steel honeycomb plank is smaller and the self-weight of the whole structure is lighter comparing with pyramided grid structure, and the steel dosage in portal strut with honeycomb laminated beam-column system is still smaller and the self-weight is still smaller comparing with steel I-beam,they will have a wide applied foreground.

最后，通过工程实例分析表明，在大跨度屋盖结构中，金属蜂窝板-杆空间结构体系比常规的四角锥网架结构具有用钢量低，结构整体自重轻等优点；在轻钢结构厂房中，采用金属蜂窝纯板片箱梁体系比一般H型钢结构用钢量更低，自重更轻，具有广泛的应用前景。

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。