英语翻译---------------哪位高手帮忙翻译下,英文版的光通量光通量是：点光源或非点光源在单位时间内所发出的能

Flux is:
Point light source or the point light source in unit of time out energy,
Which may produce the vision (one can feel out of the radiation fluxes)
That is called flux, the unit of flux for lumen ((lm),
1 Lumen (1 Lumen or 1 lm) is defined as a international standard candle
The light source of light in the unit stereo arc Angle in through the of the flux