- fractional volatilization
- 分级: grade; classify; classificat ...
- 挥发: volatilize
- 挥发: volatilize◇挥发物 volatile matter; 挥发油 volatile oil; attar; benzin(e); naphtha (粗的); oleum volatile; volatile fluid; 挥发元素 volatile element; 挥发作用 [热学] volatilizaiton; vaporization
- 分级: grade; classify; classification; gradation; grading; sorting; sizing; fraction 把棉花分级 grade the cotton; 他将学生们按能力分级。 he graded the students according to ability. 牛奶是分级出售的。 milk is sold in grades
- 挥发度,挥发性: volatility
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