查询词典 refraction angle

In this thesis we investigate the beam propagation and amphoteric refraction in a Uniaxially anisotropic crystal.

本文在理论上研究了单轴晶体中的光束传输和正负折射现象。

Methods: Thirty children who are anisometropia were analyzed using ultrasonic, the refraction and the keratometry were also be taken.

对30例屈光参差儿童的双眼进行了超声生物测定检查，同时进行角膜曲率测量和验光。

Results In the 121 patients, 47 patients(39%) were accommodative failure, 66 patients(55%) were lag of accommodation checking with FCC, 53 patients (43.8%) were uncorrected presbyopia, 65 patients (53.7%) were break up time of tear film＜10s, 87 patients (71.8%) couldn't been corrected the refraction errors or the correction of refractive errors was unsatisfied, 24 patients(19.8%) were esophoria, 17 patients (14%) were exophoria, 8 patients (7%) were anisometropia.

结果 121例患者中，调节灵活性明显降低者47例，占39%；FCC检查调节滞后者66例，占55%；未矫正老视者53例，占43.8%；泪膜破裂时间＜10s者65例，占53.7%；屈光矫正不足或未予矫正者87例，占71.8%；内隐斜者24例，占19.8%；外隐斜者17例，占14%；屈光参差者8例，占7%。

In such a medium, the direction of the Poynting vector monochromatic plane wave is antiparallel to that of its phase velocity. Because of that, DNG displays some unusual electromagnetic properties such as backward-wave effect, negative refractive effect, perfect lens and a limit situation, zero index of refraction materials.

在这种材料中，单色均匀平面波的相速方向和坡印亭矢量方向是相反的，因此使双负材料表现出一系列反常的电磁特性如：回波效应、负折射效应、完美透镜效应和一种极限情况即零折射率材料等。

An arc of colored light in the sky caused by refraction of the sun's rays by rain .

雨后由于阳光的折射而引起的天空中的带有彩色光的拱。

Methods In 390 eyes of 197 cases with spherical equivalent refraction between -0.75~-16.25 D and astigmatic -0.25~-4.00 D, the relationship between the dioptre and parameters of topography was analyzed.

年龄 18~51 岁的197例392眼，等效球镜为-0 75~-16 25 D，散光度为-0 25~-4 00 D近视眼，对其屈光度及角膜地形图各参数的关系进行统计学分析。

Attenuation induced by rain is prediceted with the equivalent complex refraction constant. The attenuation predicted is nearly consistent with that calculated by the formula recomended in ITU-R and measured results, which testifies that the method used in that paper is effective.

然后，利用所得公式计算得到的等效复折射指数预测了降雨衰减率，预测值与ITU-R推荐公式计算结果及实测值基本符合，说明文中所使用的方法是有效的。

This paper presents in detail the design principle and method of 14～16.25μm infrared bandpass filter using concept of equivalent refraction index.

本文详细介绍了用等效折射率概念、设计14～16.25μm红外带通滤光片的原理和方法，给出了设计的膜系，分析了主要工艺及膜层厚度的控制对红外带通滤光片光学特性的相互影响，并与国内外同类滤光片的光学特性进行了比较。

In this paper , on the basis of the vector theory of optical refraction a scanning trace of 45 ° multi-parallel scanning mirror was analysed , and the corresponding formulas are given.

本文在光反射矢量理论基础上，对45°镜多元并扫探测器并扫成像特性和扫描轨迹进行了分析，得到了探测平面上任意位置探测器元的扫描轨迹公式。

Reflection and refraction on the surface of a biaxial crystal.

光在双轴晶体表面的反射与折射。

Continuously improve the production mechanism, to provide customers with better quality products and services.

不断的完善生产机制，给客户提供更优质的产品及服务。

B:Yes, he was the very prize-winner in the court tennis ten years ago?

是的，他是十年前的世界网球冠军。