半不变量 meaning in English

half invariant
semi-invariant

Consequently , a new method is proposed for applying to analysis and calculation of probabilistic power losses . 2 ) based on power probabilistic modeling in traditional power system , a new model named power probabilistic modeling in power market is proposed . 3 ) this paper recommends transmission service , wheeling service , and analysis and calculation method of wheeling losses
将概率统计半不变量法应用于概率网损分析计算； 2 ）在传统电力系统随机生产模拟基础上进行扩展，将概率潮流计算和过网网损计算引入电力市场下随机生产模拟模型中； 3 ）详细介绍了输电服务、转运服务和过网网损分析计算方法，并介绍改进潮流跟踪法以增强其可行性。