independent day number

• 独立日数

independent day number的用法和样例：

例句

1. Even several weeks before the day it became jammed with fighter craft.
   在作战开始日数周前，该地已满布战斗机。
2. The most significant oasis effect is the decrease of both average wind speed and the number of gale days.
   绿洲效应最为显著的一个方面是风速的变化，绿洲使平均风速和大风日数大幅度减少。