rarefaction是什么意思_rarefaction怎么读_音标ˌreərɪ'fækʃn

rarefaction是什么意思音标:英 [ˌreərɪ'fækʃn]美 [ˌrɛrəˈfækʃən]

n. 稀薄化, 稀薄
[医] 稀疏[状态], 疏松[状态]

n. a decrease in the density of something