river bottom protection
基本解释
- 护底
英汉例句
- Hydraulic structures - guidelines - part 2 : river bottom protection structures ; drop structures, chutes , cascades, sills.
水工结构。指南。第2部分：河床保护结构。跌水构筑物陡。
dict.site - Protection: It can prevent riverbank from strong wind and heavy rain. Besides, it can protect dam and the bottom of river and prevent the loss of sand.
防护作用：防止堤岩受风，浪，雨的冲刷，并可用于护岸，护坡，护底，防止水土流失。