short-path distillation

• 极窄馏分蒸馏

short-path distillation的用法和样例：

例句

1. It is not always easy to separate a mixture of liquids into pure substances by fractional distillation.
   用馏分蒸馏法把液体的混合物分成纯物质，不总是轻而易举的事。