光度

[guāng dù]

光度的用法和样例:

例句

  1. 你用的胶卷感光度是多少?
    What's the speed of the film you're using?
  2. 光度计用来测量光的性质、尤其是光的强度和通量的仪器
    An instrument for measuring a property of light, especially luminous intensity or flux.
  3. 光度视网膜亮度单位,相当于每平方米有一烛光亮度的表面,通过一平方毫米的瞳孔区域,到达视网膜的光线数量
    A unit of retinal illumination, equal to the amount of light that reaches the retina through 1 square millimeter of pupil area from a surface having a brightness of 1 candela per square meter.
  4. 北极星第二星的光度中的一颗星,位于小熊星座把柄的末端,几乎位于北天极
    A star of the second magnitude, at the end of the handle of the Little Dipper and almost at the north celestial pole.
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