查询词典 a beam of light

A method of producing a three-dimensional image of an object by recording on a photographic plate or film the pattern of interference formed by a split laser beam and then illuminating the pattern either with a laser or with ordinary light.

全息照像术一种再现物体三维空间形象的方法，在底片或版片上记录由分裂的激光光束干扰下的图案，然后再用普通光或感激光显示出该图案

Methods(1)4 cities were chosen randomly according to their economic status and geographical location.(2)An autorefractor was used to detect the diopter in the preschool children from 20 kindergartens randomly selected from each of the 4 cities.(3)1%atropine ointment was applied to the c onjunctival sac of the children with suspect myopia for 3 days and the refractio n of light in their retina was then examined by a barred beam skiascope.(4)The eye axis and corneal curvature of the myopic children were measured.(5)The diop ter,eye axis,and corneal curvature were examined every 6 months during 1-year f ollow-up after the diopter was properly rectified.

(1)依经济状况和地理位置按随机原则抽取4市县；(2)从4市县中各随机选择20间幼儿园，对所抽取的在园学龄前儿童用自动屈光仪进行屈光筛查；(3)可疑近视患者予以1%阿托品眼膏涂双眼3d，由专人用带状检影镜进行视网膜检影验光；(4)确诊为近视的患者自愿进行角膜曲率和眼轴测量；(5)近视患者经适当的屈光矫正后，按要求进行为期1年的前瞻性随访，每半年进行1次屈光状态、角膜曲率和眼轴的检测。

If two nondiffracting beams with small difference of convergence angle and common axis exist at same time, they will interference with each other to form a light field structure that varies periodically along the propagation direction. It is a new kind of space distribution of light beam.

如果两束汇聚角略有不同的同轴无衍射光同时存在，则它们相互之间叠加干涉后产生一种纵向呈周期变化的光场结构，这是一种新的光束空间分布，这种光束在横向仍是一种同心环光斑，可用于精密对准。

The pale,the cold,and the moony smile Which the meteor beam of a starless night Sheds on a lonely and sea－girl isle, Ere the dawning of morn's undoubted light, Is the flame of life so tickle and wan That flits round our steps till there strength is gone.

传道书》在黎明射出无可置疑的曙光以前，暗黑的夜空中划过流星一点，向着汪洋大海环绕的一座小岛倾泻下苍白、寒冷、月光似的微笑，这就是生命的光焰，易变而且暗淡，照着我们的双脚，直到举步的力量耗完。

The company has modernized production line H beam 5, the annual steel production capacity of 35,000 tons, envelope system was installed more than 600,000 square meters, annual output value of 152 million yuan, with a complete line of enclosure systems production lines with international advanced design software able to conduct various kinds of light steel structure system design work and has CNC plane drilling, straight machine, CNC bending machine, CNC purlin machine, CNC machine platen advanced types of machinery and equipment.

公司拥有H型钢现代化生产线5条，年钢构生产能力3.5万吨，围护系统年安装60万平方米以上，年产值1.52亿元，配备全套的围护系统生产线，拥有国际先进的设计软件，能够进行各种轻钢结构体系的设计工作，并拥有平面数控钻、直条机、数控折弯机、数控檩条机、数控压板机等国内外先进的各类机械设备。

As is known in the art, etendue is a function of the area of the emitting source and the solid angle that the light beam includes.

如在本领域中已知的那样，光学扩展性随着发射源的面积和光束所成的立体角而变。

While a lens takes scattered beams of light and focuses them into a cone or ray it them projects on to film, a pinhole works by allowing such a small aperture that the beam coming in is quite small, and therefore remains relatively unscattered.

虽然镜头采取分散光束和重点成圆锥或射线是他们的项目，以电影，一个针孔的作品，让这样一个小孔径的光束将在相当小，因此仍相对

This time I left a lot of traces by different ways of behavior in the exhibition space, such as, rubbing by hand constantly until a hole come out, or making a hole from sky, from which a light beam comes out, the water pattered on, but the hole is not made by the pattered water.

我主要是用这个系统来做作品，这次就是在展览的空间里用很多行为方式留下的痕迹，比如用手不停地搓，直到搓出一个洞，或者天上抠一个洞，有一线光线下来，有水嘀嗒嘀嗒，但那个洞显然不是水滴出来的洞。

Under the excitation of 488 nm light beam of argon ion laser source, single suprahelical species could be observed with the aid of a common microscope due to the strong scattered light emitted by the suprahelical species. By capturing the RLS images of the single suprahelical species with a cooled charge coupled device camera, and analyzing the RLS data, herein an RLS imaging method of DNA was proposed based on the linear relationship between the counts of suprahelical species in the detection focus plane and the concentration of DNA in nanograms.

在488nm 氩离子激光光源的激发下，单个超螺旋聚集体的散射光可以通过普通显微镜观察到，用冷却型电荷耦合器对此单个粒子的RLS信号进行成像和分析，发现在聚焦平面上检测到的超螺旋粒子的个数与溶液中纳克级的DNA浓度成正比，基于此建立了一种测定DNA的方法。

Now by the light that Gelmir held above his head Tuor saw that the river began to go suddenly down a smooth slope into a great tunnel, but beside its rock-hewn course there ran long flights of steps leading on and downward into a deep gloom beyond the beam of the lamp.

此时借着Gelmir高举过头的灯光Tuor看到河流开始突然从平缓的斜坡泻入一条巨大的隧道，然而在它石凿的河道边有着一段段长长的阶梯，一路向下，没入灯光所不能及的深沉黑暗。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。