drain area

• 排水面积

drain area的用法和样例：

例句

1. The siphon drainage effect of hank slope will improve if the distance between bailing wells, or controlling drainage area, is smaller.
   港口岸坡虹吸排水系统中汲水井的间距越小或控制排水面积越小，则越能提高岸坡的虹吸排水效果。