光
- 与 光 相关的网络例句 [注:此内容来源于网络,仅供参考]
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SuperFlux LED, included of 1 to 4 cores, form self color to tricolor;4.All standard of SMD LED;5.Development of LED illumination.
可为各类照明灯具厂商提供全系列LED超亮白光、蓝光、纯绿光、红光、黄光等高等级光源二极管;LED全色系光源管;LED照明级光源模块。
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It is proven that the choice of entrance of light and the beginning of the tangent from crystal surface has no effect on resolving the final direction of light in crystal by Huygensdiagraph and a conclusion that light will still spread in line in singleaxiscrystal is drawn.
当光波入射至单轴晶体时,由于晶体结构的各向异性,入射光波在晶体中将分成两束,一束称o光或称寻常光,另一束称e光或非寻常光,这种现象被称为双折射。对于o光和
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This project was established based on the first cooperative development of optical in situ real time detecting technique probing the atomic scale layer-by-layer epitaxy growth of oxide film. Over the last three years, we have given full play to the advantages and characteristics of both sides and have finished the assumptions and plans of this subject satisfactorily. 1. In Institute of Physics, we set up advanced oblique-incidence reflectivity difference equipment and wrote one data acquisition procedure that made the simultaneous detection of optical signal and RHEED signal into reality. 2. The first observation of sustained oscillations over hundreds of monolayers in both real and imaginary signals during the epitaxy growth of SrNb0.1Ti0.9O3 on SrTiO3 substrate in LMBE testifies that oblique-incidence is an excellent method to detect and monitor film epitaxy growth real time. 3. For the first time, we verify that oblique-incidence reflectivity difference method can be used to monitor the layer-by-layer growth mode during continuous growth through the correspondence between optical signals to atomic or molecular step edge density on the growth surface. 4. Phenomenological analysis shows that optical signals comprise three parts, the first is proportional to the average thickness of the film and depends on the bulk phase dielectric response; the second is proportional to the coverage of terraces and depends on the dielectric response of atoms or unit cells in the terrace; the third is proportional to the coverage of step edges and depends on the effective dielectric response of atoms or unit cells at step edges. This makes oblique-incident reflectivity difference technique a quantitative macroscopic method to monitor film growth.
中文摘要:本课题是在合作首次发展了氧化物薄膜原子尺度层状外延生长光学原位实时探测方法的基础上立项的,三年来,我们充分发挥双方的优势和特点,圆满完成了课题的设想和计划。1、在物理所建立了一套先进的光反射差法装置,编写了计算机系统的数据采集程序,实现了两路光学信号和RHEED数据的同步采集和显示。2、用激光分子束外延在SrTiO3基底上生长SrNb0.1Ti0.9O3薄膜,首次观测到连续外延几百个原胞层,周期振荡的光反射差实部和虚部信号,证明了光反射差法是一种能原位实时探测与监控薄膜层状外延生长的好方法。3、首次验证了通过对生长表面原子或分子台阶密度的响应,光反射差法可用于原位实时监测在连续生长条件下薄膜的层式生长模式。4、通过唯象理论的研究,证明光反射差信号由三项组成,第一项只与薄膜的平均厚度和宏观光学电介质常数有关;第二项与分子台阶面覆盖度和台阶面上分子层的光学电介质常数有关;第三项与台阶边缘的覆盖度成正比,并和在台阶边缘的分子的有效光学介电常数有关。
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12H treatment group compared with 12h model group: the density of light of nNos of the Gardenoside group decreased and P53 decreased with the model group; the density of light of the nNos of the Baicalin group decreased and which of the P53 is no different with the model group, the density of nNos of the Concha Margatitifera Usta decreased and which of P53 decreased than the model; the density of of nNos of the Cholic Acid group is no different and the density of P53 decreased than the model; the density of the light of nNos of the Hefang Group is no different and which of P53 decreased than the model group.
珍珠母治疗脑缺血24小时组缺血脑组织HSP70光密度值较缺血24小时模型组无显著性差异(p>0.05)。胆酸治疗脑缺血24小时组缺血脑组织HSP70光密度值较缺血24小时模型组无显著性差异(p>0.05)。栀子苷治疗脑缺血24小时组缺血脑组织HSP70光密度值较缺血24小时模型组明显增高(p<0.01)。黄芩苷治疗脑缺血24小时组缺血脑组织HSP70光密度值较缺血24小时模型组明显增高(p<0.01)。合方治疗脑缺血24小时组缺血脑组织HSP70光密度值较缺血24小时模型组无显著性差异(p>0.05)。
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The study results indicate that as emission power increases, the peak power density on the section of a certain distance will increase firstly, then it will descend and that the peak light intensity on the section will increase with the increasing of spot radius of basic mode Gaussian beam. As the propagation distance increases, the peak light intensity on the section will descend gradually, and the laser energy will spread. The light intensity distribution exhibits straw hat shape on a certain conditions, in other word to say, the central light intensity is less than acroteric light intensity.
结果表明,无风稳态热晕效应存在时,随发射功率的增大,一定传输距离截面上的峰值功率密度先增人后减小;截面上的峰值光强随基模高斯光束的腰斑半径的增大而增大;随着传输距离的增大,截面上峰值光强在逐渐减小,能量在逐渐向周围扩展;在一定条件下,截面上的光强分布会呈现中心光强小于周围光强的&草帽型&分布。
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Simply inferred the optical-rectification effect in the silicon, discovered the optical electric voltage aeolotropic rule through the experiment of observing the relation between the optical electric voltage and the light wave direction of polarization and the orientation of crystal changing when the Si/Al schottky barrier has been illuminated, and confirm the reason is that the existence of self-field destroy the crystal symmetry, produce second-order nonlinear optical-rectification effect, and the direct-current field which has been produced by the optical-rectification effect and the self-field affect mutually.
推导了硅中的光整流效应,并通过观测Si/Al肖特基势垒受光照时产生的光生电压与光波偏振方向和晶向的变化关系的实验,发现了光生电压的各向异性规律,并确定这是由于内建电场的存在使晶体对称性被破坏,产生二阶非线性效应的光整流,光整流产生的直流电场又与内建电场相互作用的结果。
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The spectroscopic and electrochemical studies suggest the energy structure of this class complex can be easily controlled by modification. With the introduction of electron-donating arylamino groups, the obtained complexes show intense and continuous absorption bands in the region of 250-550nm with strong metal-to-ligand charge transfer dπ(Pt →π* transitions (ε~ 2×104 dm3 · mol-1 · cm-1). Complexes involving the construction of D-π-A type systems also display continuous absorption bands in the region of 400-750nm, rising from the overlapping effect of MLCT and LL'CT bands.
其中,芳胺及其二聚体类修饰基团的引入,使其配合物MLCT吸收谱带的摩尔吸光系数增加,并在250~550nm范围内形成了强的连续吸收;具有D-π-A结构的配合物,由于MLCT吸收谱带和LL'CT吸收谱带的协同效应,导致在400~750nm范围内形成连续吸收;得到了从绿光到深红光的磷光发射系列配合物,并采用真空蒸镀的方法获到了外量子效率分别为5.7%和5.0%的橙光和橙红光多层电致发光器件。
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SO〓〓/M〓O〓 solid superacid was applied to the photocatalytic oxidation of organic pollutants for the first time. Porous SO〓〓/TiO〓 solid superacid catalysts with high specific surface area were prepared by sol-gel method. The photocatalytic degradation of bromomethane was used as model reaction. The influence of impregnation with H〓SO〓 solution on the structure of catalysts and their photocatalytic performance was systematically studied by using X-ray diffraction, X-ray photoelectron spectroscopy, N〓 sorption analysis applying BET method, UV-Vis diffuse reflectance spectroscopy, FTIR spectroscopy, O〓-TPD and photocatalytic activity measurement. The acidity of TiO〓-based catalysts was investigated by Hammett indicator method, NH〓-TPD and IR spectra of pyridine adsorbtion. The mechanism of superacidifing effects on photocatalytic performances such as the photocatalytic degradation rate of bromomethane, apparent kinetic constant and apparent quantum efficiency was discussed.The results indicated that SO〓〓 is combined with metal ions of TiO〓 in a chelating bidentate mode.
本文首次将SO〓〓/MxOy型固体超强酸催化剂用于光催化氧化有机污染物研究,采用溶胶-凝胶法制备了具有多孔性和大比表面结构的二氧化钛基固体超强酸光催化剂SO〓〓/TiO〓,以光催化降解溴代甲烷为模型反应,系统地研究了H〓SO〓浸渍处理对催化剂表面酸性及其气相光催化性能的影响,结合XRD、BET、XPS、FTIR、Hammett指示剂法、吡啶吸附红外光谱、NH〓-TPD、O〓-TPD、紫外可见漫反射光谱等多种表征手段,深入地讨论了超强酸化对TiO〓的改性机理,阐明了引起SO〓〓/TiO〓超强酸催化剂光催化降解溴代甲烷的转化率、表观反应速率常数和表观量子效率变化的本质原因。
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A dual-wavelength resonance light scattering ratiometric method based on the interaction between bromothymol blue and cetylpyridinium bromide was developed for the determination of CPB.
在pH 1.5的乙酸钠-HC l缓冲溶液中,CPB本身的共振光散射很弱,BTB有一定的共振光强度,加入CPB后BTB的共振光信号显著增强,最大散射峰位于523 nm,且散射光强度与CPB的浓度呈线性关系,可以通过单波长共振光散射法检测CPB,CPB质量浓度的线性范围和检出限分别为0.05~0.60 mg/L和42μg/L。
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On the basis of previously research, this paper re-probe into the mechanism of electro-chemist mechanical manufacturing process, making the rational technological parameter, and developing the manufacturing equipment. Through a lot of technology tests, get a lot of labratory data, accordingly, researched the surface feature of the electro-chemist manufacturing process, and deeply discussed its influence on the work piece feature. The last result is that: the electro-chemist mechanical manufacturing process can reduce the low-frequency component significantly, but on high-frequency component, it has little influence, having obviously positive pole flat effect. After manufacture, the tip parts on the surface of the work piece is cut off, there is micro "high land" shape, the parameter for surface roughness is reduced a lot, the surface outline of the work piece is negative, the bearing length rate is cliffy. Also the surface quality of the work piece is improved. This can help to avoid changing the shape, improve the feature of rub, gear and reduce the time to suit. This would also ensure the precision and result in a longer work piece life.
在以前研究的基础上,本论文重新探讨了电化学机械复合光整加工工艺的机理,确定了较合理的工艺参数,对电化学机械复合光整加工设备进行了改进,通过工艺实验广泛地搜集了大量实验数据,依据实验数据,多角度地研究了电化学机械复合光整加工的表面形貌特点,并且从理论上深入讨论了电化学机械复合光整加工表面形貌对工件工作性能的影响,最后得出的结论为:电化学机械复合光整加工对工件原始表面的低频成分有较大程度的降低,而对高频成分影响较小,有明显的阳极整平作用,被加工工件表面的尖峰状凸起被去除,工件表面呈现出微观&高原型&,表面轮廓不平度高度特性参数大幅度降低,工件表面轮廓分布集中,且呈负偏态,轮廓偏斜度为负值,轮廓支承长度率曲线陡峭,工件的表面质量得到综合改善,这对提高零件的抗接触变形能力、改善摩擦、磨损性能、降低工件的磨合时间、提高工件的精度保持性、延长工件的寿命均有利。
- 推荐网络例句
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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。
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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。
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This is not paper type of business,it's people business,with such huge money involved.
这不是纸上谈兵式的交易,这是人与人的业务,而且涉及金额巨大。