查询词典 lens

The ratio of the focal length of a lens or lens system to the effective diameter of its aperture.

屈光度透镜或棱镜折光率的一种量度，等于以米计算焦距之倒数

The ratio of the focal length of a lens or lens system to the effective diameter of its aperture.

找物镜调。。。相关的英文歌曲找物镜调。。。相关的英语测试到沙龙找物镜调。。。相关的帖子

The Fisheye Super wide Lens is the only lens available that allows a 165 degreee field of view with this camera.

当它们跟INON 的Z-240闪灯组合起来的时候，用TTL方式曝光能轻易获得准确的亮度和色彩。

This work mainly studies the application of MAXWELL fisheye micro-sphere-lens of virtual parameter with gradient refractive index distributing on dispersion material and the characteristic of MAXWELL fisheye lens with virtual parameter.

本工作研究的主要是具有梯度折射率(Gradient refractive index，GRIN)分布的虚宗量麦克斯韦鱼眼微球的光学性质、在表面漫射材料上的应用和虚宗量麦克斯韦鱼眼微球透镜的性质特点。

Early on in the development of age-related cataract the power of the crystalline lens may be increased, causing near-sightedness, and the gradual yellowing and opacification of the lens may reduce the perception of blue colours.

早在发展的年龄相关性白内障的权力晶状体可能会增加，造成近视，并逐渐变黄和混浊的晶状体可减少的看法蓝颜色。

Compound lens or lens system designed to be free of astigmatism and able to form approximately point images.

没有散光并且能够形成近似的图像的透镜或透镜系统。

RESULTS:Among the 116 eyes, 94 eyes presented identical optometric results or less than 0.50D difference while 22 eyes had more than 0.75D difference after the instillation of the two agents, with 81.0% in agreement with the degree of spherical lens, with 92.2% in agreement with the compound hyperopia cylinder lens, with 84.6% in agreement with the axis of astigmatism.

结果：远视球镜度数116眼两次验光结果相同或相差≤0.50D者94眼，相差0.75D以上22眼，远视球镜度数符合率为81.0％，52眼复性远视柱镜度数符合率为92.2％，散光轴向符合率为84.6％，28眼远视年龄在8～12岁者，两次验光结果验光度数相同和相差≤0.50D，散光轴向≤5°者7眼，符合率25.0%，88眼年龄在12～16岁，符合率97.7％，≥0.75D者两例均合并有内斜视，本组两种不同散瞳剂散瞳验光结果对比远视球镜或复性远视柱镜度数相差0.75D以上者均为美多丽散瞳年龄≤12岁者或有斜视者，低于阿托品散瞳验光度数。

To use this method,hold the lens up with a fluorescent ceiling light in the background and view the lens surface.

要使用这个方法，停透镜与一个萤光云？？在背景中并且观看透镜表面。

The achromatic characteristics of holographic lens and refractive lens are studied preliminarily.

对全息光学元件和折射学光学元件互消色差进行特性了初步探讨。

Achromatic lens: A lens which refracts light of most colours equally, i.e.

消色差透镜：能够把大多数色光作等量折射的透镜。

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。