rich naphtha
... rich mortar ==> 富砂浆 rich naphtha ==> 饱和石脑油 rich nourishing food ==> 滋补的丰富 ...
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生产这种不饱和烃类最重要的路线是靠蒸汽裂解，主要以石油气体和石脑油作原料。
The most important route to produce these unsaturated hydrocarbons is by steam cracking, using principally petroleum gases or naphtha as feedstock.
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