问答题
简答题
翻译：A paraffin base crude is an oil whose chief components are paraffins, and which completely distilled, leaves a solid residue of wax. An asphalt base crude is an oil composed primarily of cyclic compounds (mostly naphthenes) which, when distilled, leaves a solid residue of asphalt. Oils which fall in the middle of these categrories are classified as mixed base.
【参考答案】
石蜡质原油主要成分是石蜡，这种油被蒸馏后剩下的是蜡状物的残渣。沥青质原油以环状成分为基本结构，这种油被蒸馏后剩下的也是蜡......
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