N energy emitted or propagated in the form of light; the product of a luminous flux and its duration, measured in lumen seconds 发光能量 ( symbol: )
To improve imaging quality, the system has the function of luminous energy and line frequency adjusting.
系统具有调光和行频调节功能，用以满足在不同能量状态和不同飞行高度下的成像质量。
These are extremely luminous (and distant) galaxies whose energy output is powered by massive black holes at their centres.
这些类星体是异常明亮的(而且极其遥远的)星系，其能量输出由这些星系中心的硕大黑洞提供。
The low-energy bulbs emit a warm luminous glow that supports the photosynthesis process of the accompanying plant, creating a direct relationship between the lamp and host plant.
这种低能耗的灯泡散发出一束温暖明亮的光线，使得与之相伴的花儿能正常的进行光合作用，这样小灯与它的寄居植物就形成了一种直接有效的关系。
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