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We have studied the spin injection of organic light emitting devices preliminarily. The organic light-emitting devices with ferromagnetic metal iron as the spin aligner and semi-transparent anode are fabricated.

我们认为如果能控制从阳极注入的空穴都是下自旋(自旋量子数为—1／2)从阴极注入的电子都是上自旋(自旋量子数为+1／2)，这样当他们在发光区相遇时，就只形成单线态激子而不形成三线态激子了。

And after ten years spent in the heart of it, rejoicing and wondering, bathing in its glorious floods of light, seeing the sunbursts of morning among the icy peaks, the noonday radiance on the trees and rocks and snow, the flush of the alpenglow, and a thousand dashing waterfalls with their marvelous abundance of irised spray, it still seems to me above all others the Range of Light, the most divinely beautiful of all the mountain-chains I have ever seen.

我爲谢拉山脉的壮丽景色而欢欣、惊叹。我沐浴在光华之中，观赏清晨雪峰上的日出、午时树木、岩石和积雪的辉映，黄昏斜阳的余晖，还有那飞流直下水花四溅的瀑布。在谢拉山中度过了十年之后，我依然觉得莱特岭是我所见过的大山中最美丽的山岭。

This light-speed might be much higher than the light-speed in the ambient space...................

也许这才是我们在有生之年最可能实现的星际旅行方法。

When the angel of light falling on a mirror changes, what happens to the angle of the reflected light?

当落在镜子上的光线的角度发生变化，反射光的角度会怎么样？

Super bright LED light source, 150 ° light-emitting angle, super-long bar and rectangle chip design, and fundamentally improve the luminous efficiency and reduce optical decay problems.

超亮的LED光源，150°发光角度，超大支架和长条形芯片设计，从根本上提高发光效率，降低光衰问题。

Tungsten lamp was used as light source, and the angle of incidence light is 0°.

该技术以白光作为液晶盒的前端光源，且白光人射角为0°。

Especially prominent here is the performance of trees, in the light irradiation under the sway in the breeze, the leaves keep the posture of the swing, with the angle of reflection of light changes, the entire tree to show the feeling of dreamy people like in the wizard world.

这里尤其突出的是树木的表现，在光的照射下，在微风的吹拂下，树叶不停的摆动着身姿，随着反射光线角度的变化，整个树木表现出梦幻般的感觉，让人犹如在精灵的世界里。

Critical angle of refraction - semi-circular cylindrical mobile light source, the incident angle change the size of refraction angle to change at this time, when the refraction angle = 90 degrees, which is critical at this time angle of incidence angle, the critical angle of water at 40 degrees large about anything mobile source of water in the water screen that is a reflection of light, a phenomenon that total reflection.

光折射的临界角定义：光折射角=90度时，入射角即为临界角，按二方法，将半导体激光光源去掉铁夹，吸附在右下角的铁板上入射光对准中心，即产生折射光线，沿半圆形柱面移动光源，改变入射角的大小，这时折射角也改变，当折射角=90度时，这时入射角即为临界角，水的临界角大的在40度左右，再做移动光源在水中的水屏即出现反射光线，这种现象称全反射。

A measurement pool is made by hanging a pair of nitrogen-filled small glass balls in non-homogenous magnetic field. The angle signal of the dumbbell ball torsion is magnified using light lever. In order to enhance the sensitivity and accuracy, CCD is used to probe the light signal spot. According to the magnetic susceptibilities of NO and NO2, the influences of these two gases on the analyzer are analyzed, and the application environment for the oxygen detector is discussed.

通过在非均匀磁场悬挂一对充氮玻璃小球构成测量池；采用光杠杆对哑铃球扭转的角度信号进行放大，由CCD对光点位置信号进行探测，以提高分析仪灵敏度和精度；由NO、NO2的磁化率特性分析这两种气体对分析仪的影响，说明测氧仪的应用环境。

Proposed a new method of determining the cell thickness and the twist angle of twisted nematic liquid crystal cells, a quarter-wave plate was inserted between the liquid crystal cell and the analyzer, a stepper motor rotated the Retarder by , and measured the light intensity of every modulated point, solved the stokes parameters of polarization light exiting from the liquid crystal cell using Fourier analysis method, thereby determining the cell thickness and the twist angle.

本文提出了一种测量扭曲向列相液晶盒盒厚与扭曲角的新方法，在液晶盒和检偏器之间放置四分之一波片，通过旋转此四分之一波片，测量各个调制点的光强，用傅里叶分析法计算线偏振光穿过液晶盒后的stokes矢量，从而求出液晶盒盒厚以及扭曲角。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。