为了深入研究电流变体中电压阀值(Ec )产生的机理，我们设计了一种全新的测试方法——饱和电压法，并用此方法明确地证实了 电压阀值(Ec1和Ec2)的存在，同时对此作出了解释；而且，我们还对 两种典型的电流变模型在不同电流变体中的适用性作出了定义。计算机模拟的结果分别给出 了两个对应于电压阀值Ec1和Ec2的序参量φ1=1.5和φ2=4.5。
For better knowing the mechanism of Ec(threshold field) in ER fluids， a new testing method，Saturated Electric Fie ld(SEF) was designed. The exist of Ec1 and Ec2 was clearly p roved and explained．Furthennore，the fitness of two well-known model for ER in different ER systems was defined．The computer simulation also gave out two ord er parameter (φ1＝1．5 and φ2＝4．5, which corresp ond well to Ec1 and Ec2, respectively.
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