回光是中国汉语里的词汇,有多种意思,指离躯远游之神魂返归躯壳。
... (舍)九验法;九余法 casting-out-9 check=casting out nines 回光(线) catacaustic 剧变 catastrophe ...
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恒星爆发数年后的回光。
这种效应被称之为“回光”,揭示了自2002年初V838 Mon亮度在几周内突然增大后从未被观测到的尘云图案。
The effect, called a light echo, has been unveiling never-before-seen dust patterns ever since the star suddenly brightened for several weeks in early 2002.
在小银行家街的转角处,一个老婆子正弯着腰在回光灯下掏垃圾堆,孩子走过时,撞了她一下,随即后退,一面喊道。
At the corner of the Rue du Petit-Banquier, a bent old woman was rummaging in a heap of refuse by the light of a street lantern; the child jostled her as he passed, then recoiled, exclaiming.
So, if you use a black lamp or something and you excite something up to a higher energy level and then it relaxes back down to its lower energy state, it's going to emit a new wavelength of light, which is going to be visible to you.
如果你用一个紫外灯或别的,东西把某种分子激发到,更高的能级,然后它会掉回,到低能级,它就会释放,一个新的波长的光,这个光是可见的。
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