馏分用英语怎么说？

馏分

例句

• These early observations have been supplemented with results from chemical fractionation. 这些早期的观察曾为化学馏分的结果所增补.
• A spectrophotometric method for the determination of trace boron in ferrosilicon alloy was proposed. 建立了蒸馏分离-姜黄素光度法测定硅铁合金中痕量硼的方法.
• 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.
• And optimum selection of crude types to meet market requirements by blending is necessary. 因此,必须选择适当的馏分油,用调合法使它满足市场的要求.