通过试验和计算，认为效率和效能可以作为评价和筛选驱油用表面活性剂的两个标尺来使用；
The testing and calculating results show that efficiency and effectiveness can be treated as two gauges to evaluate and choose flooding surfactants.
而表面活性剂亲油基的碳链长度和亲油基的支化是影响效率和效能的主要结构因素。
And the length and branching of alkyl chain in the hydrophobic group are main structure factors affecting surfactants' efficiency and effectiveness.
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