river bottom protection 中文意思是什麼
river bottom protection
解釋
河底保護- river : n 1 河，江。 Rriver Thames 或 the R Thames 泰晤士河； the Hudson R 〈美國〉哈得孫河。 the Rriver ...
- bottom : n 1 底，底部。2 地基，基礎；根底；底細，真相，原因，根源。3 （樹的）根干；（山）麓麓；〈方，常 pl...
- protection : n 1 保護，保衛，防禦，掩護，包庇，照顧 （from; against）。2 保護者，防護物 （against）; 〈美俚〉...
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Hydraulic structures - guidelines - part 2 : river bottom protection structures ; drop structures, chutes, cascades, sills
水工結構.指南.第2部分:河床保護結構.跌水構築物陡 -
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，並可用於護岸，護坡，護底，防止水土流失。 -
Effects of maintenance and raise of water level at yichang station by river bottom protection and roughness addition method and pool back - fill method in the reach from yichang to zhicheng of the changjiang river are calculated and compared by using a 2 - d flow numerical simulation method
摘要運用二維水流數值模擬方法，計算比較了在宜昌枝城的長江河段內選取重點控制河段，進行護底加糙及回填深槽對維護並抬高宜昌水位的效果。
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