与发生于晶状体中心白内障相关联的近视被归于假性近视一类，但它确实且永久地改变了光线在眼内聚焦的方式。
Nearsightedness associated with cataracts in the center of the lens is often classified with the pseudomyopias, but it is actually a permanent change in the way light focuses in the eye.
当前的计算机模型预测：近距离围绕恒星运行的炽热的木星类行星(巨大的气体球)只能像水星一样暗，后者能反射照射到它上面的大约10%的太阳光线。
Current computer models predict that hot-Jupiter planets-gas giants that orbit very close to their stars-could be only as dark as Mercury, which reflects about 10 percent of the sunlight that hits it.
有些人喜爱分形艺术，这本身就是一类形式、颜色、细节与光线非常多变的艺术作品。
Same goes for the fractal art which itself is a very diversified form of artwork in terms of forms, colors, details and lights.
如果生命存在，科学家们希望这个行星上的光线能够嵌入大气层分子的化学指纹位移指示器，像氧气、甲烷一类的气体。
If life exists, scientists expect the planet's rays to be embedded with tell-tale chemical fingerprints of atmospheric molecules, such as oxygen and methane.
而另一类哺乳类海洋掠食物种——海豚——则是使用声音去“察看”那些几乎没有光线照射到的地方。
Those other mammalian Marine predators, the dolphins, use sound to "see" in places where little light penetrates.
本文研究了一种类锥形梯度折射率纤维的光线传播特性和近轴成象规律。
The ray propagation and paraxial image characteristics of a taper-like GRIN fiber is studied in this paper.
用光线矩阵方法研究了两类带有光阑的谐振腔。
Using ray-matrix method we investigated the resonators containing two kinds of apertures.
本文定义了三类光栅的光线变换矩阵，并用所给矩阵分析了云纹。
The ray transfer matrix of three kinds of gratings is defined in this paper. By using these matrices the moire fringes are analyzed.
本文定义了三类光栅的光线变换矩阵，并用所给矩阵分析了云纹。
The ray transfer matrix of three kinds of gratings is defined in this paper. By using these matrices the moire fringes are analyzed.
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