natural l light 自然光
N L Light 标签
artificial l light 人工光源 ; 人造光
L-light 阳光
R L Light 标签
Global l Light 全局光
optical l light 可见光
L Dark nebulae not only have no light of their won, they also soak up all light.
l暗星云不仅本身不发光,而且会吸收所有的光线。
L-3's image intensifier technology enhances laser aiming, mobility and maneuvering under very low-light conditions.
L - 3公司的影像增强技术提高了在微光条件下的激光瞄准、机动性和操作性。
L Glowing nebulae are named because they give off a dim, red light, as the hydrogen gas in them is heated by radiation from nearby stars.
l有一种星云叫亮星云,它们发出暗淡的红光,这种红光是因为构成星云的氢气受到附近星体的射线激发而发出的光线。
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