fractional distillation造句

1、Fractional distillation of petroleum is carried on in a still.
石油的分馏在蒸馏器内进行。

2、K. Neon, argon, and krypton are obtained from fractional distillation of liquid air.
氖、氩、氪都能够通过分馏液态空气获得。

3、Let's say you're doing a fractional distillation of some sort.
可以说我们是在，做某种分馏。