记忆方法
将“luminosity”分解为“lumin”和“osity”。联想“lumin”与“luminous”（发光的）相似，然后想象一个发光的物体充满“osity”，即它具有光亮或明亮的质量，这样就能记住“luminosity”是指发光度或明亮性。
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英语词源
- luminosity (n.)
- 1630s, "quality of being luminous," from French luminosité or else a native formation from luminous + -ity. In astronomy, "intrinsic brightness of a heavenly body" (as distinguished from apparent magnitude, which diminishes with distance), attested from 1906.
权威例句
- 1. For a few years its luminosity flared up to about 10,000 times the present-day luminosity of the Sun.
- 它的亮度有几年一度达到了现在太阳亮度的一万倍左右。
- 2. Mount Battie without losing its definition would take on a blue luminosity.
- 远处的巴蒂山沉浸在一派蓝茫茫的暮蔼之中,轮廓朦胧.
- 3. Astronomers tacitly assume that stars of the same luminosity and color all have the same mass.
- 天文学家心照不宣地默认,光度和颜色都相同的恒星具有相同的质量.
- 4. The cloud should then have an infrared luminosity thousands of times the sun's bolometric luminosity.
- 云的红外光度应为太阳热光度的几千倍.
- 5. The quasars cannot shine for longer than a few million years with their present luminosity.
- 在几百万年以后,类星体将不可能具有他们今天那样的发光度.
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