镜面反射

The 24 pieces of costly hexagonal reflection mirrors are the core components of the most powerful spectrum survey telescope, and each of them has a 1.1 meter diagonal conjugate and 25 mm thickness. It adopts the mirror face automatically splitting joint and transforming technology which is created by Chinese and unique in the world.

24块造价昂贵的六边形反射镜，每块对角径1.1米、厚25毫米的镜面，是世界上最强大光谱巡天望远镜的核心组件，采用的是中国人开创、全球独一无二的镜面自动拼接兼具变形高难度技术。

Reflection, without diffusion, in accordance with the laws of geometrical optics; as in a mirror.

没有漫射的反射，服从几何光学的规律；就像镜面造成的反射。

The control principle of electrostatic shaping was introduced according to the balance between electrostatic force and resulting force formed by membrane deformation and the complex shaping process of SMEC. Then, taking the trisection circularity electrode for an example, the distribution characteristic of electric potential in the electrostatic field was analyzed, namely, the expression of potential function in the electrostatic field was deduced by Laplacian equation. And then, by combining the difference equation with electric potential expression, the numerical solutions of electrostatic force in single electrode mode and trisection circularity electrode mode were disposed. Finally, the calculated figure was compared with the ideal paraboloid and comparison shows that more accuracy would be achieved by multi-electrode control.

根据静电力与薄膜变形载荷作用力之间的平衡关系和静电拉伸薄膜反射镜成形的复杂过程，介绍了薄膜反射镜静电成形的控制原理；以三等分环状电极为例，分析了静电场中空间电势分布特性，即从拉普拉斯方程推导出静态场势函数的表达式；然后，利用差分与电势方程结合的方法，对单电极电场力和三等分环状电极电场力进行了数值求解；最后，将计算面形与理想抛物面进行了比较，结果显示，单电极情况下得到的薄膜反射镜面形不是理想抛物面，若采用多电极控制可获得更高的控制精度。

The control principle of electrostatic shaping was introduced according to the balance between electrostatic force and resulting force formed by membrane deformation and the complex shaping process of SMEC. Then, taking the trisection circularity electrode for an example, the distribution characteristic of electric potential in the electrostatic field was analyzed, namely, the expression of potential function in the electrostatic field was deduced by Laplacian equation. And then, by combining the difference equation with electric potential expression, the numerical solutions of electrostatic force in single electrode mode and trisection circularity electrode mode were disposed.

根据静电力与薄膜变形载荷作用力之间的平衡关系和静电拉伸薄膜反射镜成形的复杂过程，介绍了薄膜反射镜静电成形的控制原理；以三等分环状电极为例，分析了静电场中空间电势分布特性，即从拉普拉斯方程推导出静态场势函数的表达式；然后，利用差分与电势方程结合的方法，对单电极电场力和三等分环状电极电场力进行了数值求解；最后，将计算面形与理想抛物面进行了比较，结果显示，单电极情况下得到的薄膜反射镜面形不是理想抛物面，若采用多电极控制可获得更高的控制精度。

Warning Mirror : in the living room and bedroom, it is better not to use the mirror, the reflection of light from outside, usually by the shadow of a human figure will bring chaos feeling.

戒镜面：在客厅和卧室中最好不要用镜面，除了反射光线之外，晃动的人影也会给人带来凌乱的感觉。

A surface capable of reflecting sufficient undiffused light to form a virtual image of an object placed in front of it.

平面反射可以模拟一个平面反射的效果，如一面镜子镜面的反射，。。。

By deriving the model of image formation of central catadioptric cameras in detail,we have calculate the epipolar curve constraint on corresponding image points in the two panoramic images and analyzed the feature of epipolar curve s.

研究了由双曲面镜面与球面镜面共同组成折反射系统并结合普通透视摄像头所构成的一类特定全景视觉系统，推导了该全方位摄像头成像模型以及外极曲线的计算过程，分析了外极曲线特性，最后通过实验进行理论验证。

When the Heater transfer heat energy by water ,the reflexible and focusing evacuated tube can be inserted into water tank directly or joins water tank by tie-in,it lie on the diameter of the reflexible and focusing evacuated tube because that make assembling to be possible or not.

这种内置的反射镜面，既具有太阳能热水器反射板提高阳光利用率的效果，又避免了外置反射板积雪、积垢、增大风阻的弊端，其成本更得以大幅下降。

The ray from the plasma lamp will go through into the light pipe with little incident angle after reflection by the reflector, and then the total reflection of the ray will occur among the prismatic reflecting films. Some ray may come to the end mirror and will be reflected back, and only a little of rays pass through the prismatic reflecting films, most of the rays will go forward by the action of the bottom light extracting surface and go out to be lighting.

等离子灯球发出的光线经过反射器反射后，以很小的入射角进入到导光管，光线在棱镜反光膜管子内进行全反射，到达丙烯酸树脂管端底镜面的光线，再反射回到管子内部，只有少量的光线透过棱镜反光膜出来，最终大部分光线通过管子底部的光线提取面引出管外，传送到所需要照明的宽广区域（见图7）。

Based on the design and fabrication principles for the high power laser reflector, an active cooling mirror was adopted to improve the beam quality by reducing the mirror thermal distortion which can control the mirror distortion less than 0.1 μm.

根据高功率激光反射镜的设计和制作原则，对反射镜的材料性能进行了分析，采用主动水冷铜镜来减小镜面热畸变使镜面变形控制在0.1 μm以内。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。