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rarefaction英英释意- 查字库
首页英语词典rarefactionrarefaction英英释意

rarefaction

[,rɛrə'fækʃən]
  • n. [声] 稀疏;(气体)稀薄

英英释意


1. a decrease in the density of something;
"a sound wave causes periodic rarefactions in its medium"