Our most important source of radiant energy is, of course, the sun.
当然，我们人类最重要的光能的来源就是太阳。
Solar energy is radiant energy that is produced by the sun.
所谓太阳能，就是太阳产生的辐射能。
Radiant energy is also called light energy.
辐射能也称作光能。
Material energy can be transformed into radiant energy only in units of a certain size.
物质能量只能以一定大小的单位转变为辐射能量。
In radiation, thermal energy is transformed into radiant energy, similar in nature to light.
热能在辐射时，转换成性质与光类似的辐射能。
In radiation, thermal energy is transformed into radiant energy, similar in nature to light.
热能在辐射时，转换成性质与光相似的辐射能。
Such a surface would reflect no radiant energy, and hence would appear black in color.
这种表面不会反射辐射能，因此呈现黑色。
We know that light is a variety of radiant energy.
我们知道光是一种辐射能。
Radio waves are also known as radiant energy.
无线电波也被认为是辐射能。
Subjecting a sensitive chemical or material to light or other radiant energy.
使敏感的化学品或材料受到光或其它辐射能的照射。
Subjecting a sensitive chemical or material to light or other radiant energy.
使敏感的化学品或材料受到光或其它辐射能的照射。
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