n. distillate
misc. cut fraction
石脑油馏份与一个热表面接角，就裂解而得到乙烯和丙烯。
In contact with a hot surface, naphtha petroleum fractions crack to produce ethylene and propylene.
你将得到香芹酮和柠檬烯馏份的红外光谱图。并且要解析其结果。
You will obtain infrared spectra of the carvone and limonene fractions and interpret the results.
作者初步研究了将样条函数引用于逼近石油馏份，即所谓由“连续”组份构成的“复杂”物系。
The author introduced the spline approximation techniques to the numerical simulation of petroleum fractions, which are known as the so called "continua" mixtures of "infinite" number of components.
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