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Contents ·guāng shù ·No. 2 ·No. 3 ·English Expression ·French Expression ·Thesaurus ·More results... 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 n.:  dimmer,  ray,  luminous flux,  light beam,  beam French Expression n.  jet de lumière, rayon Thesaurus beam, stream