外来负荷 meaning in English

extraneous load

The author defined the risk of water supply in plain reservoir through the probability if the water demand is bigger than project ' s carrying capacity , and elaborated the risk analysis of water supply source system and the simulation method
以供水工程承担的供水外来负荷大于工程本身的承载能力的概率定义了平原水库供水水源系统的风险，阐述了供水水源系统风险分析及模拟方法。