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The thesis complete the evaluating of the image quality of the Panoramic Annular lens.

本论文所完成的工作就是对全景成像镜头的成像质量进行评价。

A novel high-luminosity LED railway annunciator composed of LED array and lens array was studied and developed.

研制了一种新型LED阵列和相匹配的聚光透镜阵列构成的高亮度LED 铁路信号机光学系统。

In a reply to Edward Weston asking for lens suggestions, page 244 of Ansel's

添购镜头的信中说到：『任何良好的现代镜头都已经经过矫准，能够在最大光圈时有最好

Ansel was telling him to stop worrying about lens sharpness, since all the ones he was considering were sharp.

Ansel是在告诫自己的这位朋友没有必要在为镜头的锐度忧心忡忡，因为他接触的所有镜头锐度都很好。

Why is it that with over 60 years of improvements in cameras, lens sharpness and film grain, resolution and dynamic range that no one has been able to equal what Ansel Adams did back in the 1940s?

在安塞尓所处的时代，并没有像Photoshop这样的计算机软件，那么他是如何创造出那些无与伦比的作品？

Why is it that with over 60 years of improvements in cameras,lens sharpness and film grain, resolution and dynamic range that no onehas been able to equal what Ansel Adams did back in the 1940s?

为何在60年后的今天，当摄影器材不论是在照相机的功能、镜头的锐利度、底片的细致度以及解析度都已经改进到一定的程度，却仍然没有人能够取代或甚至拍出相同於安塞亚当斯在1940年代所拍摄的作品？

To evaluate effect of lens increasing with ages on the vertical space of anterior segment in normal subjects.

探讨正常人晶状体随年龄的增长对眼前段轴向空间结构的影响。

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。

Description :A lens-shaped, ground-emplaced antipersonnel mine whose blast is focused in the direction of the oncoming enemy.

描述：一种在地面安置的震动感应杀伤性地雷，能对接近的敌人造成巨大的集中伤害。

It is the ratio of the aperture diameter to the focal length of the lens.

经过选择的数字成一系列。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。