查询词典 mirror

Others began considering the virtues of a concave paraboloidal mirror as primary receptor: it had been known since Antiquity that such a mirror would bring parallel incident rays to a focus at one point.

其他人开始考虑的美德，凹抛物面反射镜作为主要受体：它已被称为自古以来这样的一面镜子，会带来平行事件射线的焦点在1点。

As early as 400 BC for many years, China's "Mojing" documented book on the forward line of light, light reflection, as well as the plane mirror, concave mirror, convex imaging phenomenon.

早在公元前四百多年，我国的《墨经》一书就详细记载了光的直线前进、光的反射，以及平面镜、凹面镜、凸面镜的成像现象。

The Flame was lit from the sun's rays with the help of a concave mirror called skaphia nowadays we also use a concave mirror to light Olympic Flame.

圣火是通过一个叫skaphia 的半圆形凹面镜将阳光集中采集而成的。（凹面镜也在今天被用于奥林匹克圣火的采集。

Two different Fabry-Perot cavities have been adopted: plane mirror cavity and confocal concave spherical mirror cavity.

采用了两种不同的Fabry-Perot腔体结构：平面腔镜结构和对称共焦球面腔镜结构；首先进行了理论分析，得出两种结构中折射率变化与干涉条纹变化的关系，然后分别对两种腔体结构下的测量系统进行实验研究，都可以探测到10-5量级的折射率变化量，结果基本令人满意。

Hockney surmises, however, that this convex mirror could be turned around and used as a concave projection mirror: If you were to reverse the silvering , and then turn it round, this would be all the optical equipment you would need for the meticulous and natural-looking detail in the picture.

但霍克尼的猜测是，把这个凸面镜前后反转过来，便能当成可投射的凹面镜来用：「如果你把银涂在凸面镜的反面，并将它反转过来，就变成能做出精细自然画面的道具了。

The omnidirectional vision system includes a CCD facing upwards beneath the convex mirror and taking the picture reflected in the mirror.

全方位视觉系统包含一个CCD，向上面对一个曲面镜，并撷取曲面镜反射的影像。

Some telescopes do not use a lens at the front. They use a curved mirror at the back. A curved mirror is better than a lens in some ways.

一些望远镜的前部不用透镜，而在后面装上一个曲面镜，曲面镜在某些方面要比透镜好。

The systemic experiments are done on the relationship between the output power and the cavity parameters such as the radius of the curved mirror, the reflectivity of the output mirror, the length of the two arms and so on.

本文为进一步将其做成新型、高效、低噪声再生放大器提供了必要的依据。标签激光技术再生放大飞秒激光大焦斑折叠腔 laser technique regenerative amplifier femtosecond laser large beam size folded cavity

And the coupling efficiencies of the cylindrical mirror and the spherical mirror are studied and compared with diffraction theory.

应用衍射理论详细推导了柱面反射镜和球面反射镜对方形波导激光器的耦合效率。

In glass cylindrical surface, the mirror , the cross-shaped mirror have extremely big breakthroughs , own the in the homeland advanced technology on processing handicraft.

在玻璃柱面镜、十字镜加工工艺上有极大突破，拥有国内先进技术。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。