河流磨蝕 的英文怎麼說

中文拼音 [héliúmóshí]
河流磨蝕 英文
fluvial abrasion
  • 河 : 1 （天然的和人工的大水道） river 2 （指銀河系） the milky way system; the galaxy 3 （特指黃河） t...
  • 流 : Ⅰ動1 （液體移動; 流動） flow 2 （移動不定） drift; move; wander 3 （流傳; 傳播） spread 4 （向壞...
  • 磨 : 磨動詞1 （摩擦） rub; wear 2 （研磨） grind; mull; polish 3 （折磨） grind down; wear down [out]:...
  • 蝕 : Ⅰ動詞1. （損失; 虧耗） lose 2. （腐蝕） erode; corrode Ⅱ名詞（天體現象） eclipse
  • 河流 : rivers; stream
  1. The technology of wear resistance in silt - laden river

    多泥沙河流水輪機磨蝕的防護技術
  2. Research on arasion of yellow river water flow to axial - flow turbine and its protection

    黃河水流對軸流式水輪機磨蝕及其防護研究
  3. The sediments in the core are weakly weathered, lightly abraded and bad sorted, they have the same feature as river sediment, which is derived from near source and did not experience seriously transformation by ocean. due to the rate of insufficient sediment supply the sedimentation rate is low

    碎屑礦物風化程度低，磨蝕不顯著，分選較差，河流砂特徵明顯，沉積物來自於近源，由河流輸送入海，海洋改造不十分強烈，由於物源供應不足，沉積速率較低。
  4. Fluid machinery in these areas is damaged due to cavitation and sand abrasion, which has threaten directly the safety operation of hydraulic and hydroelectric engineering, causing huge economic losses. the research, therefore, on the combined effect of cavitation and sand abrasion is of great significance. the researchers at home and abroad have done a lot of work on this issue

    我國許多河流的含沙量較大，如著名的黃河幹流年均含沙量達37 . 9m ~ 3 / s ，黃河三門峽的年平均輸沙量達16億t ，這些地區使用的泵、水輪機等許多流體機械都在夾沙水流的作用下，受到了沙粒磨損與空化剝蝕的聯合破壞，這種破壞直接危害了水利水電工程的安全運行，造成了巨大的經濟損失，因而對含沙水流條件下空化剝蝕與泥沙磨損聯合作用進行研究有著很大的工程實際意義。
  5. The surface material is liable to erosion wear with high - velocity sediment - laden flow, hi this paper, sand wear mechanisms are discussed and some effects of significant flow factors on material wear are analyzed ; the possibility of preventing erosion wear with aeration is proposed ; based on test data, the formula for calculating the concrete material wall surface wear rate is derived. it is indicated that the wear rate is related to the air concentration, the strength of material, the flow velocity and the sediment content. it is shown that wear rate can be reduced with the help of flow aeration

    分析了空蝕與磨蝕的不同物理特徵；探討了沙粒磨蝕機理，提出了影響磨蝕vi河海大學博士學位論文一的因素；研究了摻氣抗磨的可能性：建立了混凝土材料壁面磨蝕率的計算公式；說明含沙水流對固壁材料的磨蝕率隨摻氣濃度、材料強度的增大而減小，隨水流流速、含沙量的提高而增大；利用摻氣可有效地降低過流表面的泥沙磨蝕率。
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