luminosity
英 [lu?m?'n?s?t?]
美[,l?m?'nɑs?ti]
- n. [光][天] 光度；光明；光辉
TOEFL
词态变化
复数:?luminosities;副词:?luminously;形容词:?luminous;
英文词源
- 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.
双语例句
- 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。
来自辞典例句
- 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.
来自辞典例句
- 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.
来自辞典例句
- 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.
来自辞典例句
- 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.
来自辞典例句