annual amount of precipitation

• 年雨量,年降水量

annual amount of precipitation的用法和样例：

例句

1. The annual precipitation is greater in the south than in the north.
   南方的年降水量比北方大。
2. The inter-annual change of precipitation was analyzed through the ratio of maximum and minimum precipitation.
   利用最大年降水量与最小年降水量比值来分析降水量的年际变化特徵。