查询词典 refractive

Use: A refractometer is an instrument the concentration of a queous solution by measuring it's refractive index, All water based solution can make light bend.

用途：手持式折射计是一种通过测量水溶液折折射率来测量其浓度的仪器。所有水溶液都能使光的方向发生折射。

We put it across that the sign of nonlinear refractiveindex changes under certain conditions if the high-order excited state contributessignificantly to the refractive index.The nonlinearity changes from self-defocusing to self-focusing if the refrangibility of the ground state is larger thanthat of the first excited state and smaller than that of the second excited state.

高阶激发态折射度贡献较大时，非线性折射率符号在一定条件下存在转化：如果基态折射度大于低阶激发态的折射度而小于高阶激发态折射度，材料发生自散焦—自聚焦转化；如果基态折射度小于低阶激发态折射度大于高解阶激发态折射度则发生自聚焦—自散焦转化。

The light scattering data were well described by the crossover model proposed by Anisimov and Sengers, and the effective critical exponentsγandυshowed nonmonotonic crossovers from the 3D-Ising values to the mean-field ones as the temperature departed from the critical point. The coexistence curves exhibited that the values of effective critical exponents for the order parameter of the refractive-index decreased as the distance from the critical point increased, however after the regular terms were subtracted, the nonmonotonic crossovers from Ising to mean-field critical behavior were exhibited. The influence of sodium bromide on the trend of the crossover was small.

静态光散射数据符合Sengers和Anismov等提出的临界跨接理论，关联长度和渗透压缩系数的有效临界指数存在非单调跨接，盐对于跨接程度的影响不明显；共存曲线研究发现，随着偏离临界温度，折射率的有效临界指数逐渐减小，但是当与共存曲线相关的正规项的影响被排除以后，体系表现出从3D-Ising到平均场行为的非单调跨接，盐对于跨接程度的影响不明显。

Methods:Retinoscopy was performed on 17 eyes of 17 patients with silicone oil injection in which the retina is in place.Pre-and postoperative refractive states were compared.

对17例已行玻璃体切割硅油填充手术后视网膜基本复位的患者进行检影，对比患者术前术后不同的屈光状态并进行分析。

This new model eye can simulate the different state of refractive error, and offer the assistance for the teachers to demonstrate retinoscopy to students, which is an effective approach to solve the problem to observe the diverse movement of reflective light from model eye.

这种新型检影模拟眼不但能够模拟各种人眼屈光不正，而且该装置可以提供示教功能，能够提高检影验光学习的效率，使眼视光学检影验光教育培训带来了全新的方法成为可能，为解决检影模拟眼影动观察的示教提供了有效办法。

The interference method for determination of refractive index has many advantages, such as easy-producing sample, extensive testing range, and the reutilization of sample.

因此，不断的寻找新的测量方法来满足技术发展的需要，一直是光学测量的重要研究任务之一。

Objective To develop a rapid approach of refractive index detection with high performance liquid chromatography for the determination of rhamnose, fructose, glucose, surose and maltose in Lycium barbarum L.

目的 建立同时测定枸杞中鼠李糖、果糖、葡萄糖三种单糖和蔗糖、麦芽糖两种低聚糖含量的高效液相色谱－示差折光检测方法。

This can be fulfilled by using a rhomb prism which has a nearly constant refractive index in the working wavelength range.

这可以通过一个在工作波长范围内折射率变化较小的菱型棱镜来实现。

Optical method for simultaneously measuring refractive-index structure parameter and inner scale of atmospheric turbulence.

同步测量大气湍流折射率结构常数和内尺度的光学方法。

Measurement of refractive index of polystyrene beads by using Mie scattering theory［J］.

用Mie氏散射理论测量聚苯乙烯微球的折射率［J］。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。