光学的
- 与 光学的 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The difference in the absorption coefficient for normal human stomach mucosa/submucosa tissues between 1064 and 532 nm is 53.8%,and the difference in the reduced scattering coefficient for tissue samples between 1064 and 532 nm is 52.2%,and the difference in the optical penetration depth for tissue samples between 1064 and 532 nm is 113%,and the difference in the diffusion constant for tissue samples between 1064 and 532 nm is 110%.
正常人胃黏膜/黏膜下层组织对1064 nm的激光的吸收系数与其对532 nm的激光的吸收系数的差异为53.8%,其对1064 nm的激光的约化散射系数与其对532 nm的激光的约化散射系数的差异为52.2%,其对1064 nm的激光的光学穿透深度与其对532 nm的激光的光学穿透深度的差异为113%,其对1064 nm的激光的漫射系数与其对532 nm的激光的漫射系数的差异为110%。
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High-precision spherical components have been widely used in precision machinery and aerospace industry, and spherical curvature is one of determinant to the capability of optical components, and the measure of it is an important matter in the optical component manufacture. So the research of the high precision measurement of spherical curvature has important significance.
中文摘要高精度球面元件在精密机械和航天工业中的应用越来越广泛,在光学生产的加工制造过程中也大量需要对具有球面形状的透镜的曲率半径进行高精密测量的情况,因此,球面元件曲率半径的精密测量对高质量球面样板,光学系统的质量控制等方面具有重要的意义。
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The four sets of stator bars including those retired from three large generators and the standby bar subjected to Dynamic Mechanical Analysis, Scanning Electron Microscopic and optical microscope observation. It was revealed from DMA that the peak value tan d m of mechanical loss thermogram tan d ~ T shift toward a higher temperature and a lower amplitude, indicating that the amount of movement monomers diminished greatly in the insulation aging process, the tan d 195, increased very slightly with the service time of insulation, showing the degrading of bonding properties at interface, and the presence of more defects in insulation. The observation of SEM and optical microscope showed that more and more voids appears in insulation, and delamination was formed due to development of voids in aging process.
对不同运行年数的线棒进行了 DMA 、 SEM 、光学显微镜等微观分析试验,动态力学分析发现(参见 Hao et al, CEIDP, 2002:404),力学损耗温度谱 tan d ~ T 的峰值 tan d m 随老化时间向高温、低值方向移动,表明促成环氧发生玻璃化转变的活性侧基或发生局部运动的活性链段减少,分子链的刚性增强;195℃的力学损耗 tan d 195随老化时间有缓慢增大的趋势,表明有更多的能量耗散在界面处,界面的粘合性变差,甚至由于界面粘结不良出现微观缺陷; SEM 和光学显微分析发现(参见 Hao et al-2, IEEE DEI, 2003),老化后的绝缘气隙增多,随着老化时间气隙不断扩展或相互连通,绝缘逐渐分层。
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Kinds of Schiff base derivatives of 2-N-benzylidene Furanmethanamine have been designed. The Net Charges of main atoms, bond lengths, bond angles, dihedral angles, IR have been calculated by means of HyperChem6. 0 program. 36 kinds of Schiff base derivatives of benzylidene adenine have been designed. Also the net charges of main atoms, bond lengths, bond angles, dihedral angles, IR, the energy gap △E between HOMO and LUMO and the nonlinear second-order polarizability β have been calculated by means of HyperChem6. 0 program. The calculated results indicated that the nonlinear second-order polarizability β were up in accordance with the △E down.
设计了腺嘌呤缩苯甲醛36种衍生物,计算了这些分子的气相几何,腺嘌呤缩苯甲醛中各原子的电荷分布,最高占有轨道HOMO和最低未占有轨道LUMO的能量以及它们之间的能量差△E,同时还计算了这些分子的二阶非线性极化率β,我们发现腺嘌呤缩苯甲醛的二阶非线性光学系数与△E有近似一致的变化关系,随着△E的减小,二阶非线性光学系数有增大的趋势。
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The experimental result shows, Morpho butterfly's wing micro-structure forms the reflecting rate higher than the reflecting rate of other butterflies, so regard Morpho butterfly as and transfer to the micro-structure of printing, is observed by SEM and transfered to the vein micro-structure printed, demonstrate the same array scale as Morpho butterfly and carinate fin slice, small in more quantity than Morpho butterfly in the slight branch form structure, but metal micro-structure of color and luster printed off to transfer to raise reflect, it is it print off by AFM array carinate fin of alternate size nearly the width of 1.5μm to transfer to measure.
实验以高解析光学显微镜及紫外光/可见光光谱仪分析虎斑蝶、碧翠凤蝶、锯粉蝶、摩浮尔蝶蝶翼表面的光学反射、穿透与吸收特性,实验结果显示,转印的Morpho蝶翼微结构与真实摩浮尔蝶反射率较相近,故将Morpho蝶作为转印微结构,由SEM观察转印的翅脉微结构,呈现出与Morpho蝶相同的阵列鳞片与脊状的鳍片,虽细微的树枝状结构少,但转印出的微结构溅镀20nm的金属膜提高反射率,而由AFM检测转印出阵列脊状的鳍片间隔尺寸约为1.5μm的宽度。
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This work, concentrated on the asymmetric allylation of aldehydes controlled by different chiral auxiliaries prepared from rotational pure tartaric acid, can be divided into three parts.The first part aims to review the developments of chiral drugs and asymmetric synthesis, from which derived the present research topic backgrounds and works.Synthesis and applications of allylation from aldehydes are the second part of the thesis. By optimizing the reaction conditions, such as solvents, temperature, time and chiral auxiliaries like N,N\'-dibenzyl tartamide, N,N\'-p-dimethylphenyl tartamide, N,N\'-o-dimethylphenyl tartamide, N,N\'-o-dichlorophenyl tartamide, N,N\'-a-dinaphyl tartamide, N,N\'-dicyclohexyl tartamide and N,N\'-diphenyl tartamide, ideal experimenttal conditions are obtained according to HPLC monitoring, as well as the auxiliaries\' recoveries experiments. Starting from benzaldehyde and 3-bromopropaldehyde, N,N\'-dibenzyl tartamide is considered the best auxiliary in this reaction.
本文介绍了醛的不对称烯丙基化反应,以光学纯酒石酸为原料,研究了不同构型手性配体在醛的烯丙基化反应中的立体选择性,全文共分三部分十个章节:第一部分对当前手性药物和手性技术进行了概述,并由此展开了本文的研究背景和任务;第二部分为有机合成部分,对醛的不对称烯丙基化反应进行了深入探讨,以苯甲醛为原料对反应条件进行优化,在优化的反应条件下对制备的七种可回收手性酰胺配体(N-苄基酒石酸二酰胺、N-对甲苯基酒石酸二酰胺、N-邻甲苯基酒石酸二酰胺、N-邻氯苯基酒石酸二酰胺、N-a-萘基酒石酸二酰胺、N-环己基酒石酸二酰胺和N-苯基酒石酸二酰胺)进行筛选,优化配体回收实验条件,最终确定出N-苄基酒石酸二酰胺在苯甲醛的不对称烯丙基化反应中具有较大优越性,结晶回收的手性配体光学纯度保持不变。
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The author has accomplished the following tasks:1. presented the general scheme of the profile measuring system;2. presented four methods of laser collimation, realized 3 of them with the software of ZEMAX, and meted the requirement of the system design;3. realized the laser beam expanding from point-laser to line-laser wide enough to cover the flange trackside;4. after image grabbing and processing, picked up the profile of the train wheel.
作者独立完成的工作包括: 1、提出了曲面测量的光学系统的整体方案; 2、提出了四种激光扩束的方案,用光学设计软件ZEMAX完成了其中三种的设计;经过像差分析和追迹,达到了准直扩束的要求; 3、点光源到线光源的单方向扩展,达到了覆盖轮缘踏面的要求; 4、通过实验采集图像和图像处理,提取出被测轮缘的轮廓。
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We have developed many kinds of optical methods to measure the insect flight. For example, a beating force measurement method reduces the uncertainty caused by air turbulence; a flow measurement using a frame straddling technique decreases the interval between exposures of the flow;extracting the weak distorted fringes on the dragonfly wing by a correlation algorithm; measuring the camber deformation of a dragonfly wing using projected comb fringe without hypothesizing that the wing is a rigid plate. By measuring the beating force, wing kinematics and flow, simutantously, we can analyze the relationship among many flight parameters.
本研究针对昆虫运动的特点,研究开发了测量昆虫运动,特别是自由飞行昆虫运动的光学方法,包括:风洞中扇翅力的测量,解决高灵敏度光学测量的抗干扰问题;帧头帧尾流场测量方法,解决由CCD拍摄帧频导致的测量速度低的问题;调制相关算法,解决透明翅膀上散射光较弱问题;梳状条纹投影法,解决翅膀弓形变形测量问题,不需要以往的翅膀刚性平板或刚性条杆假设;多参数的综合测量,解决各参数间的相位匹配问题。
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Its basic principle, classification, applications, and new developments are introduced and described in detail. 2 A new optimum method named simulated annealing algorithm is introduced and applied in the analysis of the ellipsometric spectra. 3 Some new ferroelectric materials have been studied by the method mentioned above, and some new results achieved as follows. First, Ca-modified lead titanate ferroelectric thin films have been prepared by solgel processing. The optical constants spectra of the 〓(x=0.0-0.4, 0.24) films have been obtained, the structure properties of the thin films have been studied by XRD and AFM.
回顾了椭偏光谱近一个世纪的产生发展的历程,系统介绍了椭偏光谱的基本原理、物理模型,以及广泛应用与发展状况。2)介绍模拟退火算法这一新型的优化方法,并将其结合Forouhi-Bloomer模型和Sellmeier模型应用到椭偏光谱分析中。3)用上述方法分析几种新型铁电材料的光学性质,并获得以下结果:首先,第一次获得钛酸铅钙系列、钙原子含量分别为0%、10%、20%、24%、30%、40%的铁电薄膜的光学常数谱,并结合XRD和SEM分析其结构,发现随钙含量的增加,薄膜晶相发生变化。
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Transmissions at 0.75 and 1.65 μm can also be used to retrieve τ and re. 2. Study the impact of cloud inhomogeneity on the satellite retrieval simultaneously. Two 3D cloud fields, cumulus and stratocumulus fields are used in our study. The two cloud fields are generated with LES model and are adopted by the I3RC phase II. The BRDF at the wavelengths of 0.65 and 2.13 μm are calculated with SHDOM, and then the cloud optical thickness and effective particle radius are simultaneously retrieved using the MODIS algorithm. We studied the impact of cloud inhomogeneity on the satellite retrieval at high and medium resolutions. Some conclusions have been made, such as the BRDF abnormal phenomenon, the reverse relationship between τ and re, the clustering effect of over and under estimation in the retrieval of τ and re .
我们选用为I3RC所采用的由LES模式给出的具有明确物理属性的两个高分辨率三维云场-积云场与层积云场,利用SHDOM三维辐射传输模式来模拟卫星观测的辐射值,并采用MODIS算法进行反演,同时研究了在高分辨云场及中低分辨率云场下,云的非均匀性对反演云光学厚度及有效粒子半径的影响,并得到了云的非均匀性会造成的双向反射率异常,反演结果中光学厚度与有效粒子半径的负相关关系,高估或低估现象是成&簇&出现的等结论。
- 推荐网络例句
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The split between the two groups can hardly be papered over.
这两个团体间的分歧难以掩饰。
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This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.
这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。
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The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.
聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力