质量发光度半径关系 mass-luminosity-radius relation
质量发光度关系 mass luminosity relation
闪闪发光的质量 shiny quality
蒸发光散射质量检测器 Evaporative Light-Scatting Mass Detector
并且对白光led特性进行分析，设计了恒流驱动电路，保证发光质量。
And this paper analyzes the characteristic of white LED, designs constant-current drive circuit, so that guaranteeing the quality of light.
这种黑物质不发光，但它远远重于银河系数以亿计的恒星，使银河系的总质量达到太阳的一至二万亿倍。
While it emits no light, this dark matter far outweighs the Milky Way's hundreds of billions of stars, giving the galaxy a total mass one to two trillion times that of the sun.
在银河系心脏位置，一个特大质量的黑洞近几年开始神秘的发光。 科学家都无法确定其原因。
One supermassive black hole, at the heart of a galaxy neighboring the Milky Way, has been mysteriously brightening in recent years, and scientists aren't sure why.
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