| 释义 |
hub·ble constant AHD¦həbəl-
基本英英近义反义
哈勃常数
Noun:
cosmology the ratio of the speed of recession of a galaxy due to the expansion of the universe to its distance from the observer; the Hubble constant is not actually a constant, but is regarded as measuring the expansion rate today近义词 Hubble parameter哈勃参数 |