| 释义 |
cosmic background radiation- 英?[?k?zmik ?b?kɡraund ?reidi?ei??n]
- 美?[?kɑzm?k ?b?k?ɡra?nd ?redi?e??n]
英英释义Noun1. (cosmology) the cooled remnant of the hot big bang that fills the entire universe and can be observed today with an average temperature of about 2.725 kelvin
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