什么是屈光不正？
The deceleration gives the new medium a different refractive index.
减速使新介质获得不同的折射率。
Uncorrected refractive errors (myopia, hyperopia or astigmatism), 43 %.
未经矫正的屈光不正(近视、远视或散光)，43%。
Light in the vicinity of the pulse is slowed more and more when the refractive index changes as the pulse passes by.
随着脉冲经过，折射率发生改变，靠近脉冲的光速度越来越慢。
Because shock waves represent a stark and sudden change in refractive index, they show up clearly in schlieren photographs.
因为冲击波反映了折射率的明显和突然的变化，他们能在纹影摄影中清楚地被展现出来。
There are three primary types of refractive errors: myopia, hyperopia and astigmatism.
有三个主要类型的屈光不正：近视，远视和散光。
The compound high-energy X-ray lens is a kind of novel refractive X-ray optical device.
高能X射线组合透镜是一种基于折射效应的新型X射线光学元件。
The most common types of refractive errors are myopia, hyperopia, presbyopia, and astigmatism.
最常见的屈光不正有：近视、远视、老花眼和散光。
ObjectiveTo determine the relationship between corneal curvature and clinical refractive change.
目的研究角膜曲率与临床屈光变化之关系。
The negative impact of Hydrogen in the plasma to the refractive index is proved to be negligible.
并论证等离子体中氢对折射率的负影响可以忽略不计。
A waveguide is characterized by a region of high refractive index bounded by regions of lower index.
波导就是折射率高的区域由折射率低的区域包裹的结构。
The refractive index of the PDLC is measured and it is coincident with the results by other methods.
用此方法测量了某聚合物分散液晶的折射率，与用其他方法得到的结果相符。
As the pressure tuning is carried out by freon with high refractive index, the tuning range can be expanded to 550 GHz.
由于采用折射率高的氟里昂气体进行气压调谐，调谐范围可达550千兆赫。
A simple and accurate method for determining the refractive index and the thickness of thin films is presented in this paper.
本文给出了一种简单而准确地确定光学薄膜折射率和厚度的方法。
The technique can image variations in what is known as the refractive index of air - in essence, the speed of light in a given medium.
这项技术能够使空气折射率图形化-本质上就是特定介质下的光速。
Of these, 12 million children are visually impaired due to refractive errors, a condition that could be easily diagnosed and corrected.
其中，1200万儿童视力因屈光不正受损，这种病情易于诊断和矫正。
The relation between the stress along the optical axis of trigonal crystallographic system and the refractive index is established.
运用折射率椭球分析晶体的弹光效应，给出了三方晶系沿光轴方向的应力与折射率的变化关系。
A method of investigating how refractive index of transparent liquid varied with temperature by using Michelson Interferometer was proposed.
文章提出了一种利用迈克尔逊干涉仪研究透明液体折射率受温度影响变化的实验方法。
Semiconductor nanoparticles, which own large nonlinear refractive index and fast response speed, have been extensively studied in the last decades.
半导体纳米微粒因其非线性折射率高、响应时间快而在过去的十年里倍受关注。
Its refractive index is higher than that of the traditional optical fiber material, silica, so silicon nitride has good optics confinement property.
其折射率比传统用作光纤的石英的折射率高，对光有较好的约束性能，因此在光波导方面可能会有更好的应用前景。
Laser phase Doppler anemometry (PDA) technology can be used to measure moving particle's velocity, size and relative refractive index simultaneously.
激光相位多普勒(PDA)能够同时测量粒子的速度、大小和相对折射率。
An arc of all seven spectral colors appearing in the sky opposite the sun as a result of the refractive dispersion of sunlight in drops of rain or mist.
由于雨滴或雾滴对阳光有折射分光作用，使空中太阳对面出现的一道有七色光谱的弧。
In natural materials, light waves entering at an Angle always bend to plunge more steeply into the material-the hallmark of a refractive index greater than 1.
在自然物质中，以一定角度进入的光波，进入物质后的角度更小——标志着折射率大于1。
Refractive errors cannot be prevented, but they can be diagnosed by an eye examination and treated with corrective glasses, contact lenses or refractive surgery.
屈光不正无法预防，但可通过验光作出诊断，并可选择眼镜、隐形眼镜或手术加以矫正。
Air temperature distribution is analyzed with a finite element method. Linear distribution of refractive index is calculated for certain measurement positions.
该文利用有限元方法分析热轧车轮周围空气温度场，计算得到相应测位空气折射率的线形分布规律。
Ramesh Raskar: the World Health Organization estimates that over half a billion people have uncorrected refractive error, which is affecting their daily livelihood.
拉梅什·拉斯卡尔：世界卫生组织推测，全球有5亿多人因患屈光不正而影响到日常生活。
Globally, uncorrected refractive errors are the main cause of visual impairment; cataracts remain the leading cause of blindness in middle - and low-income countries.
在全球范围内，未经矫正的屈光不正是视力损害的主要原因，在中、低收入国家，白内障仍然是致盲的主要原因。
They then cascaded the negative index medium with a positive refractive index medium so that the complete nanostructure behaved as one with an index of refraction of zero.
他们将负折射率材料和正折射率材料级联起来成功实现了零折射率行为的纳米结构。
Using nanofabrication techniques, the researchers etched tiny holes into the nitride to make a desired pattern, giving the waveguide the cloaking refractive index profile.
通过纳米制备技术研究者在氮化硅中刻蚀出许多空洞以构成所需图案，使得波导具有合适的隐形折射率。
Petroleum products - Determination of aromatic hydrocarbon types in middle distillates - High performance liquid chromatography method with refractive index detection.
石油产品。中间馏分产品中芳香烃类的测定。用折射指数检测的高性能液相色谱法。
应用推荐