incident ray

The intensity reflectivity of the film is correlated with the wavelength of an incident ray and the height of the film .

该空气薄膜的光强反射率是关于入射光波长和薄膜厚度的函数。

The incident ray vector can be directly calculated and corrected from the measured star coordinates through substituting the calibration parameters into the mathematical model , thus the errors of the optical system can be compensated .

将标定出的参数代回数学模型，便可由星象点测量坐标直接计算并修正入射光方向矢量，从而对光学系统的误差进行了补偿。

Three factors of restraining speckle noise in detection system , coherence , phase difference and polarization of the incident ray , were analyzed in detail , and the relations between these factors and speckle contrast were also presented .

对采用激光照明的测量系统中散斑形成的三个重要因素，即入射光束的相干性、相位差和偏振特性进行了详细的理论分析，并给出了这些因素与散斑对比度的变化关系。

As the film sample is fixed on one plane by tighten bolt , this device can realize the deflection of optical path . And the reflectivity of the sample is measured by using oblique incident ray .

使用该装置并通过平面和样品背后的顶丝固定薄膜样品的安装方式，可实现光路转折，完成斜入射光对薄膜样品反射率的测量。

The numerical evaluation shows that the formula is accurate and reliable . The result is referential to radar target identification with oblique incident ray . The method can be easily generalized to compute the scattering matrix of flat with any other edge shape .

结果对掠入射时的雷达目标识别具有参考意义，该方法可以推广到计算任意边缘形状平板的散射矩阵。

Study of periodic thickness of multilayer optical thin films by double crystal grazing incident X ray

多层光学薄膜周期厚度的双晶X射线掠入射研究

The number of cascade particles changes according to the incident cosmic ray energy , observation height , etc.

到达地面的簇射粒子数目会随不同因素而改变，包括原初宇宙射线的能量、观测高度等。

Analyses of reflectivity of grazing incident X - ray microscope

掠入射X射线显微镜反射率分析

The γ - ray absorption coefficient decreases gradually with the gradually increased incident γ - ray energy for same medium .

对于同一介质，介质对γ射线的吸收系数基本上随着入射γ射线能量的逐渐增大而逐渐减小。

The requirement for the angular error between the incident and the reflecting ray is about ± 10 arc second .

入射光线经五折镜组件反射后出射的角度误差为±10〃。

Hence the properties , such as energy and incident direction , of the incident cosmic ray can be calculated according to data from stations .

因此，透过比较不同观测站的数据，可以推算原初宇宙射线的能量、入射方向等资料。