In order to study the rule of wax deposition of Daqing oilfield crude oil in oil pipeline, a experimental unit is made by self.
从原油输送管道实际出发，利用试验室自制的蜡沉积试验环道对大庆原油进行蜡沉积试验，研究了多种因素对原油管道蜡沉积规律的影响。
Fuzzy system lacks self-study ability and its membership functions and fuzzy rule are chosen by experts subjectively;
研究过程中发现模糊系统缺乏自学习能力，隶属度函数和模糊规则的选取带有一定的主观性且依赖于专家；
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