年平均蒸发量
Annual average evaporation
平均蒸发速率
average rate of evaporation
降水量-蒸发量比例
precipitation-evaporation ratio
X光齿槽骨丧失年平均量
yearly radiographic alveolar bone loss
大地震年平均发生率
The annual average rate of earthquake recurrence
多年平均发电量
average annual energy output
多年平均蒸散量
annual mean evapotranspiration
剂量平均线能
dose average lineal energy
dose-averaged lineal energy
空间平均平衡密度
spatial averaged equilibrium density
摩尔质量平均
relative moleculat-mass average
平均发动机运转寿命
behavior equilibrium exchange rate(BEER) model