Based on effect of the impedance Angle value size in flicker calculation formula, an engineering estimation method of impedance Angle for flicker calculation is presented in this paper.
本文在考察了闪变计算公式中网络阻抗角数值大小的影响作用后，提出了一种闪变计算中阻抗角工程实用估算方法。
The safety reliability and system risk estimation formula of electric pumping system are established by means of the safety systematic engineering method.
按照安全系统工程法，建立了电泵系统的安全可靠度以及系统风险评价的量化公式。
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