光线

The relationship between wavelength and numerical aperture is valid only for increased resolving power when light rays are parallel.

当光线是平行时，波长与 numerical aperture 的相关性在增加解析度时才会有效。

The condition of the normal eye when parallel rays are focused exactly on the retina and vision is perfect.

屈光正常当平行光线恰好聚焦于视网膜并形成清晰视觉时正常眼睛的状态

Focal power tells us .what a lens dose to parallel rays.

焦点光度表示透镜对平行光线所起的作用。

Hence only parallel rays are able to pass through this aperture and therefore as the reflecting object seems to be infinitely remote, there can be no perspective distortion and also magnification is independent of the distance to the lens.

因此，只有平行光线能够通过此孔径，因此，作为反映的对象，似乎是无限遥远，不可能有任何角度的扭曲和放大，也独立于距离镜头。

Close-up performance of the Summicron-M is on the same level as the performance at infinity setting actually infinity is that distance where the incoming light rays are parallel to the optical axis.

近摄表现与无穷远时相当(事实上，无穷远处的光线是平行光轴入射的。对多数镜头而言，大约100倍焦距的物距时，入射光满足这一条件)。

Myopia: As axial length is too long, due to refractive eye refractive power of the system is too strong, resulting in 5 meters away from the formation of the parallel light rays focus before the retina.

近视眼：由于眼轴过长，由于眼球屈光系统的屈光力过强，以致5米以外的平行光线在视网膜之前形成焦点。

An analysis is made about Descartes rays of transparent round-section fibers——a special internal surface reflection rays of the fiber when parallel rays strike the fibers perpendicularly to fiber axis.

分析了透明圆形截面纤维在垂直纤维轴光线照射时纱维内表面反射光的一种特殊现象———笛卡尔线现象。

An analysis is made about Descartes ray s of transparent round-section fibers——a special internal surface reflection rays of the fiber when parallel rays strike the fibers perpendicularly to fiber axis.

分析了透明圆形截面纤维在垂直纤维轴光线照射时纱维内表面反射光的一种特殊现象———笛卡尔线现象。

This surface works a bit like a giant radio telescope dish in reverse: Rather than focusing parallel astronomical light rays to a point, it collects the scattered plasmons emerging from a tiny sample--positioned strategically near the mirror--and redirects them into a plasmon "beam" in the metallic plane.

这个表面的工作原理相当于一个倒置的巨型射电望远镜的盘面，不同于天文望远镜把平行的天体光线会聚到一点，这一设计起到的作用是收集从一个位置恰好位于像点的微小样品散射出来的等离激元，并把他们重定向成金属平面上的一个等离激元束。

Rays leave the slit as a parallel beam.

光线'。''。

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。