Hubble constant
01
哈勃常数, 哈勃参数
(cosmology) a measure of the rate at which the universe is expanding, determined from the observation of distant galaxies' recession velocities
例子
The Hubble constant tells us how quickly the universe is expanding.
哈勃常数告诉我们宇宙膨胀的速度有多快。
Astronomers use the Hubble constant to estimate the age of the universe.
天文学家使用哈勃常数来估计宇宙的年龄。
