sediment erosion and deposition

基本解释

In the confluent area, flow pattern is tangled, the changes of sediment erosion and deposition are big, and the condition of navigation is complex.
河流交滙口區域水流紊亂，泥沙沖淤變化大，通航條件極其複襍。
The whole process of water and sediment in watershed consist of water generation and concentration, sediment erosion, transportation and deposition.
全流域的水沙過程包括降雨産流、滙流的全過程，以及泥沙侵蝕、輸移、沉積的不同運動形態。
As a result of in arid, semi-arid climatic zone, soil erosion and sediment deposition in Iran are very serious and have become one of main problems influencing national development.
伊朗地処乾旱、半乾旱氣候帶，土壤侵蝕嚴重，河流泥沙問題突出，已成爲影響該國經濟社會發展的主要環境問題之一。