光的

In order to study the grating diffractive field's characteristics of the partially polarized and coherent beams, an analytic expression of polarization degree and angular correlation of partially ploarized and coherent beams through polarized gratings is derived based on the beam coherentce-polarization matrix approach of partially coherent beams.

为了研究部分偏振部分相干光光栅衍射场的衍射特性，利用部分偏振部分相干光的光束相干-偏振矩阵，推导出了部分偏振部分相干光通过任意偏振光栅后，衍射场的偏振度及场中衍射级次角相关的一般解析表达式。

It still remains to be shown how the wave theory explains the refraction of light and the variety of colours. The corpuscular theory is capable of this, as we know.

我们还需要说明光的波动说怎样去解释光的折射和色的多样性，我们知道光的微粒说能够作出这种解释。

The normalized output power of slow beam as a function of phase-matching angle is presented according to the fitted curve of experimental data.

从基频慢光和基频快光的受激发射截面竞争的角度出发，首次提出了位相匹配转折角θ〓的概念以及以θ〓作为基频光性能优秀的判据。

E is photonic energy; h is Planck constant, this represents the characteristic of particle;υ is the frequency of photon, this represents the characteristic of wave.

"E"为光能；"h"为普朗克常数，表示光的粒子特征；"υ"为光的频率，表示了光的波的特征。

With diagram, this paper explains the representing function and applying characteristics of 3 scene impressing lights which do not aim at illumination and character stuffing. The distinction is briefly made between the light decoration and impression in concept and function.

结合图例介绍不以照明和人物造型为布光目的的三种场景效果光的表现功能和应用特点，最后对装饰性和写意性两种光效在概念和作用上的一些区别作了简要的对比和叙述。

The cameras and receivers that are used in modern color TV must have three electron guns instead of one because it is necessary to televise not just differences in intensities of light, but the differences in intensity of three kinds of light-the blue, green, and red wavelengths of the primary colors of transmitted light.

现代彩色电视用摄像机与接收机必须有三个而不是一个电子枪，因为电视播送不仅需要光度不同，而且需要三种光的光强（发射的光的三原色蓝，绿，红的波长）也不同。

In order to obtain symmetry and parallel polarized light,the double Wollaston prism is amended. After getting symmetric polarized light at a big splitting beam angle,an ordinary triangular prism is added so that the symmetric light beam can be divided into parallel light beams.

为了获得对称且平行分束的偏振光，对双Wollaston棱镜进行了修正，在获得大分束角的对称偏振光后，配合普通玻璃三棱镜，使对称分束光变成平行分束光，通过改变三棱镜与双Wollaston棱镜间的距离来改变平行光的剪切距离。

In order to obtain symmetry and parallel polarized light, the double Wollaston prism is amended. After getting symmetric polarized light at a big splitting beam angle, an ordinary triangular prism is added so that the symmetric light beam can be divided into parallel light beams. The distance between the triangular prism and the double Wllaston prism is changed so that the distance of the shearing parallel light can be changed.

为了获得对称且平行分束的偏振光，对双wollaston棱镜进行了修正，在获得大分束角的对称偏振光后，配合普通玻璃三棱镜，使对称分束光变成平行分束光，通过改变三棱镜与双wollaston棱镜间的距离来改变平行光的剪切距离。

Because of the difference of the workpieces,the height of the polisher must be adjustable,which is realized by use of pulley block .

介绍了木工用抛光机的主体结构，由于被抛光的工件高度不同，要求抛光机的机头高度可以上下调整，本设计中采用滑轮组实现了这一功能。

Since the velocity depends on the medium through which the light is passing, it will be different in glass from the velocity in empty space.

因为光的速度依光所通过的介质而异，因此光在玻璃中与在真空中的速度不相同。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。