Its origin is required of refraction or reflection of the light by atmospheric ice crystals.

If a refraction or a reflecting body is irreqular, the wave front undergoes a deformation.

如果折射体或反射体是不规则的, 波前即产生变形.

METHODS: Refractive error was determined by subjective refraction and if unavailable by auto refraction.

方法: 由主观眼光和自动验光计来确定屈光不正情况.

Efficacy measures include axial length, keratometric power and mean absolute refractive error.

有效测量值包括眼轴长度, 角膜曲率和绝对屈光误差值等内容.

A 2 mm spot quickly and effectively performs the majority of refractive correction.

2毫米点迅速和有效地执行大半的折射纠正.

The increase of annealing time and temperature leads to rise of refractive and decrease of thickness.

结果表明随热处理温度的提高和热处理时间的延长,薄膜的厚度减小、折射率增大.

They are also suited for use in optical and light refractive applications, such as lasers.

它们也适合用在光学和光折射的应用, 如激光.

Used for bonding optics lens and some high refractive index LCD.

用于光学镜头的粘接和部分高折射率液晶的粘接.

Biological reactions are probed by detecting the change of refractive index.

它通过探测介质的折射率变化来探测生物反应.

Natural materials all have a positive refractive index.

所有的自然物体都有阳性折射指数.

Deformation of disk surfaces and refractive index changing with temperature are primary factors of optical distortions.

介质变形和热光效应(折射率随温度变化)是产生波前畸变的主要原因.

Optical interference takes place in a thin transparent wedge of refractive index m.

光的干涉发生在折射率为m的薄的透明的楔形物里.

Because of dispersion, gems have a different refractive index for each wavelength of light.

因为散射的原因, 宝石对不同波长的光有不同的折射率.

The survey liquid refractive index is one quite tedious and the complex experiment process.

测量液体折射率是一个比较繁琐且复杂的实验过程.

The local defect modes is investigated in photonic crystals with negative refractive index structural defects.

研究了含有负折射率缺陷的光子晶体中的局域缺陷模.

The result shows that the relationship of refractive index and volume of fat is linearly dependent.

并以牛奶为测量样品,得出牛奶的折射率随其脂肪的体积含量成线性变化的规律.

All the peaks are sensitively dependent on and refractive index of the defects.

缺陷相距较近时,禁带中心不存在透射峰.所有透射峰都敏感地依赖于中间缺陷的折射率.

The genetic algorithm is employed to inverse the refractive index of a particulate system.

利用多波长消光法,在已知粒度分布前提下,采用遗传算法对折射率进行了反演.

The band gap's broaden is apparent when the larger refractive index layer is graded.

改变高折射率层的几何厚度,光子带隙的拓宽更为显著.

The measurement of group refractive index of fibers using semi coherent interference is introduced.

介绍了用准相干干涉法测量光纤群折射率的方法.

When the refractive index changed the moving direction, it relied on the sign of change.

当层厚递变时,光子带隙均向长波方向移动.