极光光线 RAYO AURORA ; Aurora Beam
梦幻高光光线笔刷 Abstract Brushes
光光线 PROGARD
聚光光线 spot light
光度配光曲线 candle power distribution curve
X射线荧光光谱 XRF ; X-ray fluorescence spectrometry ; X-Ray Fluorescence ; X-ray fluorescence spectrum
射线荧光光谱 XRF ; XFS ; WDXRF ; XRFA
光谱光效率曲线 spectral luminous efficiency curve
光线光学 ray optics
其他物种只在光线适宜时才会展示它们的视觉形象，以此来考虑光的变化情况。
Other species take into account the changing conditions of light by performing their visual displays only when the light is favorable.
黑暗其实是因为缺少光的缘故，我们可以研究光线，但无法研究黑暗。
Darkness is in reality the absence of light. Light we can study, but not darkness.
发出的光可能是邻居恒星光线折射造成的。
The glow may be caused by light reflected from nearby stars.
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