单词：fractional_distillation 

名词

• 
  [1.n.fractional_distillation] (同义词:[fractional_distillation(分馏 )]  )
• 
  注释列句：fractionation of a liquid by distillation
• 上位词 -> [fractionation( n. 分别, 分馏法 )]  [industrial_process]  [process( n. 过程, 作用, 方法, 程序, 步骤, 进行, 推移 vt. 加工, 处理 )]  [physical_entity]  [entity( n. 实体 )]