抗静剂，乳化剂，分散剂，助剂，防锈剂。
对常规稠油降粘剂和加入纳米助剂后的乳化降粘剂进行了对比评价。
The conventional heavy oil viscosity reducer was compared with emulsion and viscosity reducer after using nano-assistant.
采用乳化结晶法，研究了粗蒽精制过程中溶剂、温度、助剂及分离时间的作用。
The effects of solvent, temperature, additive and separation time on the refinement process of crude anthracene by using emulsion-crystallization were reported.
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