first impoundment首次蓄水
water impoundment蓄水
impoundment effect蓄水效应
reservoir impoundment水库蓄水
surface impoundment地面储存
natural impoundment天然蓄水
tailings impoundment尾矿堆存
impoundment basin集水池;应急池
impoundment lake集水池
The results demonstrate that after impoundment the pollution concentration reaches 49.4 mg/L from 11.14 mg/L while pollution zone extends 4～10 km.
得出蓄水后浓度由11．14mg／L增加到49．4mg／L，污染带长度为4～10km。
参考来源 - 三峡工程对长江重庆段水环境影响及对策