... 部分 part; section; portion 挥发性馏分；挥发部分 volatile fraction 锅炉蒸发部分 boiling section ...
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volatile fraction determining 挥发分测定
volatile fraction in petroleum coke 石油焦挥发分
volatile fuel fraction 燃油的易挥发馏分
A volatile fraction of petroleum consisting chiefly of pentanes and hexanes.
主要由戊烷和己烷组成的一种挥发性石油馏分。
You decrease the mole fraction of the less volatile material in the gas phase.
更不易挥发的物质，在气相中的，摩尔分数减小了。
There is always a bottoms (or residue) fraction, which is the least volatile residue that has not been separately captured as a condensed vapor.
总有底部残留物（或残液）存在，这是挥发性最小的残液，没有被作为冷凝液而单独收集。
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