英语词汇“fractional distillation”是什么意思，“fractional distillation”的读音、用法及例句翻译-乐坝网

词汇	fractional distillation
释义	fractional distillationn.（名词） Distillation to separate volatile chemical substances in which the products are collected in a series of separate fractions, each with a higher boiling point than the previous fraction.分馏作用：分离易挥发的化学物质的蒸馏法，其中生成物被收集在一系列单独的馏分里，每种馏分的沸点都比未分馏前高
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