研究结果表明：回波强度受导引头光路中光学镜头的相对孔径、摄像管靶面倾斜和离焦的影响较大；扫描激光光束的入射角等因素对回波强度也有一定的影响。

Research results show that the relative aperture of optical lens, the incline and defocusing of reflection plane in TV seeker optical system reduce the intensity of the "cat's eye" reflection.

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它们其实焦不离孟，孟不离焦（原文：同一束光的两头），总是翩翩起舞，共创美好生活。

Always dancing together to create a beautiful life experience.

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像一头鹿撞到了车头灯的光。

Like a deer in the headlights.

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So, we'll take a little bit of a step back after we introduce quantum mechanics, and talk about light as a wave, and the characteristic of waves, and then light as a particle. And one example of this is in the photoelectric effect.

等我们介绍完量子力学后,我们要回过头来讨论下光,作为一种波和它的波动性特征,以及光作为一种粒子,其中的一个粒子就是光电效应。

麻省理工公开课 - 化学原理课程节选