光

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。

This article introduces the flatting mechanism of fluoro- carbon coatings, selection of flatting agent and influencing factors on flatting effect.

介绍氟碳涂料的消光机理、消光剂的选用以及影响消光作用的因素。

The addition of the matting agent mainly have two methods: the first is directly added to paint system in powder form; the second, flatting paste is prefabricated, then add them into paint system.

消光剂的添加方法主要有2种：一种是以粉状形式直接添加到涂料体系中；另一种是预先制备消光浆，再以消光浆的形式添加到涂料体系中。

The process of the generation of the flattop beam profiles was observed by CCD and it was shown that the partially coherent flattop profiles appeared in two position of the focused field.

本文利用对入射光进行相干度调制的方法，在实验上研究了聚焦光场中的部分相干平顶光束，用CCD记录了光束的产生和演变过程，验证了聚焦光场中部分相干平顶光束的存在。

For floodlighting , the luminance and the color of the lighted object depend not only on the power and the color of the illuminant, but also on the color of the lighted object (the spectral reflectance of the surface), so, if we choose the optimum matching illuminant for the lighted object in lighting design, we can get excellence and energy efficiency result.

泛光照明中，被照体的亮度大小、颜色变化等视觉效果不但与电光源的功率和光色有关，而且还与物体色等有关，所以在进行照明设计时，应选择光源色和物体色相匹配的光源，这样才有可能使泛光照明效果较好，而且达到照明节能的目的。

The spectral features of apple florescence mainly presented as absorption of blue light and red light, reflection of green light, and the strong reflection of near-infrared between 750 nm to 1300 nm.

苹果树花期光谱特征主要表现为对蓝光和红光的吸收、对绿光的反射，和对750~1300 nm近红外的强烈反射。

The technique is requires a thermal cycling process to amplify target DNA strand in vitro, intercalation of labeling into the amplified DNA strand, and detection of the variation of fluorescence intensity of labeling dye during the amplification of DNA strand a Fluorimeter.

此技术，主要需结合温控机构与萤光分析仪，在温控过程进行DNA体外增生，同时监控增生过程中DNA嵌合萤光萤光强度的变化，进行定量分析，实现此技术之仪器被称为即时侦测同步定量聚合酶连锁反应器(Real-time PCR machine)。

This thesis demonstrates the pre-polymers in a polymer-dispersed cholesteric liquid crystals can be polymerized into a polymer film, which can eliminate the aligning capability of the homogeneous alignment layer. Thereafter, the textures of the cholesteric liquid crystals in UV-cured region can be changed from reflective planar texture to the scattered focal conic one. Additionally, the clearing temperature of the liquid crystals can be reduced by doping with chiral dopant or monomers. The cause is the increase of the impurity concentration in LCs. In other words, if the monomers are polymerized, the clearing temperature of LCs in that region should increase due to the decrease of the impurity concentration. Therefore, impurities associated with doping with monomeric and chiral dopants cause the clearing temperature of LCs in cured region to differ from that in uncured region.

本文中，我们提出在高分子聚合物薄膜之胆固醇液晶(polymer-dispersed cholesteric liquid crystals，简称PDCLCs)中，利用紫外光使PDCLC中的单体聚合成薄膜，此即为光引致聚合反应，而该薄膜将原本在表面所作的配向膜覆盖且破坏其配向能力，使胆固醇液晶由原本反射的planar结构转换成散射的focal conic结构；另外，有关液晶材料的相变温度会由於掺杂手性分子或单体而降低，此因液晶材料内『杂质』浓度增加，而造成的液晶材料之不纯度增加，最终导致相变温度降低，若搭配上述光引致聚合反应，则由於光照区之单体聚合，使该区域单体占总材料之比例下降，即不纯度降低，进而使液晶材料之相变温度上升，该区域之相变温度与未照光区有所不同。

One of the important tasks in my dissertation is to investigate Fraunhofer diffraction pattern of a polychromatic, spatially coherent wave diffracted by an annular aperture. The phenomena of spectral anomalies in the vicinity of the Airy rings in Fraunhofer diffraction pattern are investigated in detail. The effect of the parameters of the annular aperture on the spectral changes is studied particularly.

本学位论文的一部分内容进一步研究了在夫琅和费衍射模型下，多色空间相干光经过环形光阑衍射后的光谱变化情况，详细讨论了在该模型下振幅为零的点附近的光谱奇异现象，着重研究了改变环形光阑参数等对光谱变化的影响。

The intensity distributing and the contributing range for using the serrated aperture are analyzed based on Fresnel diffraction theory.

应用菲涅耳衍射光强分布理论以及光轴上光强分布理论对波纹光阑在一定条件下的作用范围进行了分析。

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。