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Contents
guāng shù
  Was bundle of light, such as light searchlight
Translated by Google
No. 2
  Still light beam. Was bundle of light, such as the searchlight of the light.
Translated by Google
No. 3
  光束
  guāngshù
  [light beam] 具有一定关系的光线的集合,也就是光波波阵面的法线的集合,称为光束。分为同心光束和平行光束。前者由发光点所发射光线而构成;它与球面波相应。后者为发光点在无限远处发出的光束,它与平面波相应。
English Expression
  1. n.:  dimmer,  ray,  luminous flux,  light beam,  beam
French Expression
  1. n.  jet de lumière, rayon
Thesaurus
beam, stream