單詞
rarefaction
[,r?r?'f?k??n]
基本信息
- n. [聲] 稀疏；（氣體）稀薄
GRE
英文詞源
- rarefaction (n.)
- c. 1600, from Middle French raréfaction or directly from Medieval Latin rarefactionem (nominative rarefactio), noun of action from past participle stem of Latin rarefacere (see rarefy). Used chiefly in reference to gases.
雙語例句
- 1. This is called a rarefaction and is represented by widely spaced dots.
- 這個區域稱為稀疏區,并用疏散的小點表示.
來自辭典例句
- 2. The classical elementary waves in Riemann solutions include rarefaction wave, shock wave and contact discontinuity.
- 黎曼解涉及的經典基本波包括疏散波 、 激波和接觸間斷.
來自互聯網
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