光

Based on Huygens principle,the translation of transmission light relative to incident light is analyzed in theory as the incident light parallels to the normal Nicol prism's long side,according to the propagation characteristics of e light in crystals.The beam translation of six species of improved Nicol prism are calculated.

从惠更斯原理出发，根据e光在晶体中的传播特性，从理论上详细分析了光线平行于常规尼科耳棱镜长边入射时透射光相对入射光的平移，并给出了6种改进形式尼科耳棱镜的光束平移。

Methods: Cell proliferation was measured by crystal voilet staining assay. The activity of lactic acid dehydrogenase in the upper layer of culture solution was tested to examine the damage to the cell membrane.3H-TdR was used to study the effect of porphyrin nitrogen mustard on the synthesis of DNA.

用结晶紫染色法测定卟啉氮芥对人肝癌细胞SMMC7721的光动力抑制效应，用测定培养上清乳酸脱氢酶活性方法研究光动力作用对人肝癌细胞SMMC7721细胞膜的作用，用3H-TdR掺入法研究光动力作用对人肝癌细胞SMMC7721DNA合成的影响。

By using the non-degenerate TPA absorption process between both of pulses, a novel project if explored for compressing and shaping the self-compression pulse induced by FCA, in which shaping of self-compression can be optimized by adjusting the initial delay time and control pulse energy. In addition, the operations of ultrafast all-optical modulation and logic NOR gate are achieved by utilizing the non-degenerate TPA effect.

应用脉冲之间的非简并双光子吸收过程，探索出了对受自由载流子吸收作用而形成的自压缩脉冲进行压缩整形的新方案，通过调节脉冲之间的初始时延和控制脉冲的能量，可以优化自压缩脉冲的质量；另外，应用此效应，也实现了超快脉冲对连续光场的全光调制和超快逻辑非门的操作，在光调制过程中，发现了色散和初始啁啾都将改变所形成的调制暗脉冲的调制深度。

Finally, by means of time evolution operator and numerical calculations, the time evolution of the atomic population, the atomic dipole squeezing, the time evolution of the squeezing and coherence properties of the light in the system of the two identical two-level entangled atoms interacting with the coherent optical field have been studied.

论文的第三部分工作是采用时间演化算符和数值计算方法，研究了两全同二能级纠缠原子与相干态光场相互作用过程中，原子布居、原子偶极压缩、光场的二阶相干和光场压缩性质的时间演化特性。

In the apparatus design aspect, at first we design an optical tweezers instrument with one optical trap,and introduce detailedly the selection rule of the every structure of the instrument,especially discuss the selection of the laser optical source and the microscope object lens.

在仪器的设计方面，对如何建立一套单光阱光镊仪器系统做了初步的调研，详细介绍了单光镊系统各结构的选取原则，其中重点讨论了激光器光源和显微物镜的选取。

A spatial distribution of diffuse reflectance produced by obliquely incident light is not centered about the point of light entry.

倾斜入射的光所产生的漫反射的空间分布，其中心与光的入射点存在一个偏差，这个偏差与组织的吸收系数和有效消光系数有直接的关系。

Results:One hundred and eleven eyes were treated with PRP, 95 eyes were treated with mild-PRP. Visual acuity was increased by 1～3 lines in 82 eyes(35%), not changed in 94 eyes(46%) and decreased in 30 eyes(19%). On Fundus fluorescein angiography 3 months later, new vessels shrinked and retinal edema recovered in most cases, but in 10 eyes, new vessels and small nonperfusional areas still could be seen after the treatment, which was treated again.

结果：111只眼行广泛视网膜光凝术治疗，95只眼行亚广泛视网膜光凝术治疗。82只眼视力提高1～3行，占35%；94只眼视力无变化，占46%；30只眼视力下降，占19%。3个月后行荧光素眼底血管造影检查，新生血管大部分萎缩，视网膜水肿消退，有10只眼残留新生血管及小片状无灌注区，再次补充光凝。

In some light intensity scope, the open-circuit voltage and short-circuit current increase with the increase of incident light intensity, but the fill factor decrease.

在一定光强度范围内，NPC电池的开路电压和短路电流均随光强度增加而增加，但填充因子随光强度增加而减小。

Markov chain of stochastic process theory was introduced into the reflection mathematic model by considering the fact of total reflectance when light propagate to optically thinner medium from denser medium. The reflectance mathematic model of halftone image coated with different reflectance ink layer was established and discussed.

将随机过程论中的马尔可夫链理论引入到印刷品的反射－透射数学模型中，考虑到光在由光密介质进入光疏介质中传播时会发生全反射现象的事实，讨论并建立了不同折射率油膜层叠加的半色调图像光谱反射率数学模型。

In this paper the light frequency shift of an optically pumped Cs beam frequency standard is reported and analyzed.

介绍了光抽运铯束管的光频移测量的原理和结果，并对结果进行了简要的分析，估算了射入Ramsey腔的相应光强。

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。