英语语法分析

Objective: To extract and determine Naphtha in Fennel fruit.

目的：从小茴香中提取挥发油，并测定其含量。

Various solvent naphtha fraction generally have to go through refining.

各种溶剂油馏分一般都需要经过精制加工。

Light petroleum distillate, generally known AS naphtha, wAS the logical choice.

轻石油馏分，如石脑油是合乎逻辑的选择。