查询词典 Lens

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。

Using lathe, made 32 lens and 13 of then was used in correcting aphakia of children.

应用机床对32只角膜片进行了切削，并将其中13只应用于临床治疗儿童无晶体眼。

Objective:To evaluate the clinical efficiency of fitting soft contact lens for monocular aphakia children.

目的：评价婴幼儿单眼无晶体眼配戴亲水性角膜接触镜的效果。

Epikeratophakia is a good method for correcting aphakia of children.When making corneal lens,the authors should take account of the preserving methods and time.

提示表面角膜镜片术是治疗儿童无晶体眼的有效方法，但在加工镜片时应考虑不同保存时间、方法的影响。

The soft contact lens is acceptable for aphakia children under the monitor of their parents.It improves the visual acuity,binocular fusion and stereo visual acuity.It can be used as early as possible for monocular aphakia children to prevent the amblyopia and refractive strabismus.

婴幼儿在其监护人的帮助下，配戴接触镜是安全的，视力较矫正前明显提高，斜视的避免关键在于坚持规范配戴和积极的弱视治疗，戴镜后屈光参差减少，双眼融合功能和立体视得到改善，从而提高了视觉质量。

The technique using the laser photocoagulation on dry retinal tear appears to be safe and reliable, especially applied among the high-risk population with retinal detachment including the high myopia, the aphakia, ocular blunt trauma and the artificial-lens.

干性视网膜裂孔行眼底激光光凝术安全可靠、无不良反应，尤其在视网膜脱离高危人群包括高度近视眼、无晶状体眼和人工晶状体眼、钝挫伤以及另眼有视网膜脱离病史者，更应常规散瞳进行详细的眼底检查，早期发现干性裂孔，及时给予眼底激光光凝术，防患于未然。

If you were not , and OS X just booted normally, have no fear.

如果你没有，和OS X刚刚启动通常，没有恐惧。

I only want to preserve our all .

我只想保存好我们的一切