rarefaction
noun /ˌreərɪˈfækʃn/
/ˌrerɪˈfækʃn/
[uncountable] (specialist)- a decrease in the density of air or a gas
- rarefaction at higher levels in the atmosphere
| 单词 | rarefaction |
| 释义 | rarefactionnoun /ˌreərɪˈfækʃn/ /ˌrerɪˈfækʃn/ [uncountable] (specialist)
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