microwave background
noun
- Astronomy a weak uniform microwave radiation which is detectable in nearly every direction of the sky. It is believed to be evidence of the big bang.【天文】微波背景（天空中可测微弱微波, 据信为宇宙大爆炸证据）。
| 单词 | microwave background |
| 释义 | microwave backgroundnoun
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