concave bank

基本解释

The external cause is the mother current scouring the concave bank and the lateral circulation scouring the curved river channel.
凹岸部位主流線的頂沖和彎曲河道橫曏環流的側蝕，是決口的外部因素；
Therefore, the scheme of four cages that are disposed on the side of concave bank is the last scheme according to the practical engineering problem.
因此，針對所要解決的工程實際問題，決定採用緊靠凹岸佈置四道斜底檻的方式作爲最終的消減急流沖擊波方案。
The results reveal that after the impounding, Tunaozi Shoal transformed basically from convex-bank entrenched meander to shallow broad river, and will further develop to a concave-bank deep channel.
分析表明，蓄水後土腦子河段已基本完成由凸岸深切河曲曏寬淺河曲變化的過程，將會進一步轉化爲凹岸深槽的河曲。