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Shadow,Schlieren and Interference methods are used to determine the changes of refractive indices of plasma.

本文介绍用阴影、纹影相干涉方法确定等离子体折射系数变化的原理。

A portable three-wavelength laser scintillometer is developed. By three lasers with wavelength of 473 nm, 532 nm and 671 nm, the TWLS system can simultaneously measure refractive index structure parameter and inner scale of atmospheric turbulence.

研制了一种便携式三波长激光闪烁仪，使用473nm、532nm和671nm三个波长实现了大气湍流内尺度和折射率结构常数的同步测量。

To form the theory and method of hybrid refractive-diffractive optical design that can join to the Chinese conventional optical design system, the primary aberration theory expressed by PWC about HRD systems has been investigated, and the function relation between Seidel sums and P, W, C, between ∞,∞,∞ and the diffractive lens structure have been established.

为了形成与中国传统光学设计体系相街接的折衍混合光学设计的理论和方法，研究了PWC表示的折衍混合薄透镜系统初级像差理论，建立了赛德尔像差和数与P、W、C的函数关系，以及∞、∞、∞与衍射透镜结构的函数关系。

Thermal emission of a semitransparent slab with variable spatial refractive index .J.

各向异性散射梯度折射率介质层的热发射特性。

And nonlinear fast response time. The distribution of refractive index of the devicesatisfies sine function.

并制备了非线性一维光子晶体波导光双稳器件，该器件的折射率空间分布呈正弦形式。

Making use of the characteristic matrix methods, the photonic bandgap of the electromagnetic wave in the photonic crystal that the refractive index is discontinuous to change along with the sine function is studied.

利用特征矩阵法，研究了折射率正弦离散变化的一维声子晶体中电磁波的能带结构。

The refractive index measurements have been carried out at 0.24、 0.17 and 0.08 mass fraction of sodium bromide.

测量了当溴化钠质量百分比浓度分别为0.24、0.17和0.08时该体系一系列温度下共存两相的折射率，得到了T-n共存曲线。

Measuring refractive indices of isotropic solid using brewster angle method［J］.

用布儒斯特角法测量各向同性固体的折射率［J］。

Through detailed calculation and analysis of the dispersion characteristic of the noble metals like Au and Ag, we found that the group velocity combined with the group refractive index can change from negative to positive with increase of the photons energy in the visible Drude region and has the spectral property which is in agreement with the experimental results obtained in this work.

通过对贵金属Au和Ag的光学常数的色散特性分析和数值计算，发现在可见光的Drude光谱区，表征光子能量传播方向的群速度和群折射率的值会随光子能量的增大而发生从负到正的改变，这与本论文研究的实验测量和观察结果相符合。

Postoperative refractive error in group Ⅰ was prominent, and the mean spherical value was 5.12±2.53 D and mean cylindrical value was 3.23±1.55 D.

组患者术后屈光度差异大，平均球镜值(5.12±2.53) D，平均散光度(3.23±1.55) D。

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。