查询词典 refractive

So , it comes to the conclusion that the value of the natural refractive index should be inputted in data processing if possible and a value larger than 2.0 should be believably chosen as the inputted refractive index if the natural refractive index of the measured particles is unknown .

从而得到结论：在测量过程中应尽可能输入与颗粒实际折射率一致的数值；当无法确知颗粒实际折射率时，比较可靠的办法是适当选择一个大于2.0的数值作为输入折射率进行数据处理。

Paired Samples T test revealed that both the LT and VL decreased (P.01), the AD increased (P.01) after cycloplegia regardless of their refractive state. The AL increased for hyperopic eyes (P.05) and decreased for myopic eyes (P.01) after cycloplegia. For hyperopic eyes, the major keratometer K1 increased (P.05) while for myopic eyes, the major keratometer K1(P.05) and minor keratometer K2 (P.01) decreased after cycloplegia. The mean corneal power of zones 5 mm (MD5) and 7 mm (MD7) decreased with myopic eyes decreased dramatically (P.01). The mean refractive power of the lower half vertical meridian is greater than that of upper half; and the mean refractive power of the lateral half of the horizontal is greater than that of the medial half.

结果：不论远视眼、正视眼还是近视眼在睫状肌麻痹后前房加深（P.01），晶状体变薄（P.01），玻璃体腔径缩短（P.01）；但远视眼睫状肌麻痹后眼轴增长（P.05），近视眼眼轴缩短（P.01）；远视眼睫状肌麻痹后角膜曲率K1增加（P.05），近视眼睫状肌麻痹后除K1降低外（P.05），K2以及以角膜中心点为中心，直径为5mm、7mm的环平均角膜屈光度（MD5、MD7）均降低（P.01）；此外，垂直径线上方的平均角膜屈光度小于下方的平均角膜屈光度而水平径线鼻侧的平均角膜屈光度小于颞侧的平均角膜屈光度（P.01）。

The main innovations in this dissertation are the following:(1) High refractive index glass beads are made by laser;(2) Large and small beads inlayed films are fabricated;(3) The second rainbow method is presented and used on measuring the refractive index of high refractive index glass beads.

本论文的创新点在于：(1)用CO〓激光成功地制作了高折射率玻璃微珠；(2)完成了大小珠镶嵌结构的微珠列阵逆向反射膜的实验设计和制作；(3)提出并实现了用二次彩虹法测量高折射率玻璃微珠的折射率。

Analyses show that refractive index changeinduced by thermal effect is similar to the change induced by other effects for linearabsorption,if laser pulse width is far less than the characteristic time of sample,i.e.refractive index change is directly proportional to spatial part of incident pulse laserintensity,so time averaged nonlinear refractive index can be defined.

结果表明，当激光脉冲宽度远小于被测样品的特征时间时，对于线性吸收来说，其热效应产生的折射率变化与其它效应产生的折射率变化有类似的形式，即与入射脉冲激光光强的空间部分成正比。因而可定义时间平均非线性折射率。在这种情况下，可用通常的Z-scan法进行非线性折射率及热光系数的测量，所得结论符合以前的实验结果。

Excimer laser refractive surgery is an important adjunct to the subspecialty of refractive surgery. The principles of the excimer laser refractive surgery and surgery categories are analyzed.

在初始角膜模型假设的基础上，提出了能够用于近视、远视和散光等屈光手术的数学模型，计算出切削量和切削的层数，并给出了相应的算法框图。

Based on the molecular topological theory, a modified group dyeing indexL is introduced. It is used in the study of refractive index of the ketones and ethers. Relationship between the refractive index and molecular structure of 57 ketones and ethers is studied by using quantitative structure-property relationship technique. The reasonable molecular modeling equations are obtained by multiple regression for the prediction of the refractive index of ketones and ethers.

在分子拓扑理论的基础上，提出了一个修正的基团染色指数L，运用定量结构－性质相关技术研究了57种酮类和醚类化合物分子的折射率与分子结构间的定量关系；通过多元回归的方法建立了L与折射率的定量结构－性质相关模型。

Methods The refractive state, corneal refractive power, anterior ocular segment length, vitreous length and ocular axial length were measured for 1 336 eyes, including 523 hyperopic eyes, 199 emmetropic eyes and 614 myopic eyes. The relationships of these elements were studied. Results CP had no effect on the refractive state.

检测1 336只眼的屈光状态、角膜屈光力（corneal refractive power， CP）、眼前节长度（anterior ocular segment length， ASL）、玻璃体腔径(vitreous cavity length， VL)及视轴长度(ocular axial length， AL)，其中远视523只眼，正视199只眼，近视614只眼。

The theoretic results show that retroreflective intensity increases gradually with accretion of refractive index when refractive index is less than two, but decreases when refractive index is great than two.

研究结果表明，折射率增大，折射率小于2时，回向反射性能逐渐增强，相反，在折射率大于2时，回向反射性能减弱；反射层面积的大小会影响入射光线的完整回向反射过程；最后定义了有效回向反射角度，并给出了玻璃微珠在激光照射下的二维回向反射光照度分布。

This paper described the principle of plane ultrasonic spreading abroad in the liquid coming into being ultrasonic grating,educed the density and refractive index changing rule basis continuity equation of not-ideal liquid and Lorentz-Lorenz law,expressing the transformation of the index and refractive index satisfaction similar equation of standing wave,and described the relation curve of the standing wave form at a few special times,liquid density and refractive index periodic variety according to the res...

描述了平面超声波在液体里传播形成超声光栅的原理；根据非理想流体对应的连续性方程和Lorentz-Lorenz定律，推导了液体光栅中液体密度与折射率的周期性变化规律，表明液体密度和折射率变化满足相似的驻波方程；根据推导的结果描绘了几个特殊时刻的驻波波形、液体密度、折射率周期性变化之间的关系曲线；进而由折射率周期性变化规律分析了超声驻波自身像的形成原理，并给出了CGS型超声光栅声速仪利用超声驻波自身像测量声速的方法与实验结果。

This work mainly studies the application of MAXWELL fisheye micro-sphere-lens of virtual parameter with gradient refractive index distributing on dispersion material and the characteristic of MAXWELL fisheye lens with virtual parameter.

本工作研究的主要是具有梯度折射率(Gradient refractive index，GRIN)分布的虚宗量麦克斯韦鱼眼微球的光学性质、在表面漫射材料上的应用和虚宗量麦克斯韦鱼眼微球透镜的性质特点。

This brought fixed cost, but it also is meant at the same time use a source to won't make you singlehanded assume a problem.

这带来了一定的成本，但它同时也意味着使用开源不会让你独力承担问题。

He gained a small fortune in real estate.

他在房地产上发了一笔小财。