rarefaction
音标:[,rεəri'fækʃən]
n. 稀薄化, 稀薄【医】 稀疏[状态], 疏松[状态]
◆记忆方法一:
词根词缀记忆法:rarefaction n 稀薄(rarefy变稀薄),-faction表名词,“达到的状态”,由-fy转化而来
This is called a rarefaction and is represented by widely spaced dots.
这个区域称为稀疏区,并用疏散的小点表示。
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