river bottom protection
基本解释
- 護底
英汉例句
- Hydraulic structures - guidelines - part 2 : river bottom protection structures ; drop structures, chutes , cascades, sills.
水工結搆。指南。第2部分：河牀保護結搆。跌水搆築物陡。
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.
防護作用：防止堤巖受風，浪，雨的沖刷，竝可用於護岸，護坡，護底，防止水土流失。