By transverse exposure, periodical modulation of refractive index is formed along the axis of optical fiber.
制备原理是对光纤横向曝光，使光纤的折射率指数在轴向发生周期性变化。
By IOR (fresnel reflections) - uses a fixed reflection curve based on the angle of view and its strength is controlled by the material's index of refraction.
依照折射率（菲涅耳反射）使用一个依据观察角度计算的反射折射，其数值大小依据物质折射率。
The function n(x, y)is known as the refractive index profile.
函数n（x，y）称为折射率分布。
Theoretic Research and Numerical Simulation of Negative Refractive Index Materials;
负折射率物质的理论和数值模拟研究
Statistical Validation of COSMIC Radio Occultation Refractivity Profiles
COSMIC掩星折射指数廓线的统计验证
index of refraction
ph.1. 【物】折射率
NUMERICAL CALCULATION OF HIGH ORDER ABERRATION COEFFICIENTS OF RADIAL GRIN LENS
梯度透镜折射率分布高次项系数的数值计算
Study on the Refractive Index Measurement of High Refractive Index Glass Beads;
高折射率玻璃微珠折射率的测量研究
Microwave refractometer for accurate measurement of atmospheric refractivity
精确测量大气折射率的微波折射率仪
All measurements of refraction really consist of two parts, one is the refractive index, and the other tells how much EM radiation is absorbed by the material.
对于折射的度量有两个指标，一是折射率，另一个反映辐射被物质吸收的情况。
Measurement of Thermal Maximal Birefringent Index Coefficients of Mica Crystal
云母晶体最大双折射率温度系数的测定
Measurement of the temperature coefficient of maximal birefringent index of crystal by polarized interference spectrum
测量晶体最大双折射率温度系数的偏光干涉法
Research on the Seasonal Adjustment on the Chain Index of CPI and Annual Rate of CPI;
CPI月度环比指数季节调整及CPI折年率方法研究
Relation Between the Medium Refraction Coefficient and Refractional Angle in Measuring the Liquid Refraction Coefficient with Method of Grazing Incidence;
掠射法测液体折射率时折射角与介质折射率的关系
Finite Element Method for Solving Radiative Transfer Equation in Graded Index Medium
梯度折射率介质内辐射传递方程数值模拟的有限元法
PLRC-FDTD analysis on electromagnetic wave reflection coefficients of conductive plate coated with negative refractive index materials
金属平板覆盖负折射率媒质的电磁波反射系数的PLRC-FDTD分析
Radiative Entropy Transfer Equation and Numerical Computation of Radiative Entropy Generation in Semitransparent Graded Index Medium
半透明梯度折射率介质内辐射熵传递方程及其数值模拟(英文)
The refractive index of a substance is determined by two properties known as the electrical permittivity and the magnetic permeability.
物质的折射率由两项性质决定，分别是介电常数和磁导率。