levee grade 中文意思是什麼

levee grade 解釋
堤頂沿中心線的縱坡
  • levee : n 1 （國王等起床后的）接見。2 〈英國〉（國王專對男臣舉行的）早朝，接見；（法國宮廷的）早朝。3 〈...
  • grade : n 1 等級，級別；階段；程度，標準，水平。2 〈美國〉（中小學的）年級；某一年級的學生。3 〈pl 〉 〈...
  1. 3, logging curve comparison results show that in the west part of south region there is a grade 4 normal fault, and the separation is 4 - 6 meters. five microstructure types and 8 top and bottom composition patterns have been proposed. the relationship between microstructure and deposition facies was studied and the genesis relationship was confirmed, that is, top microstructure is mainly corresponding to nature levee, contrasting to that of the bottom microstructure

    提出了五種微構造類型及八種頂底微構造組合模式；並研究了微構造與沉積相的關系，發現它們之間存在一定的成因聯系，即頂面微構造中高點、鼻狀和斷鼻構造主要對應于邊灘微相，低點與溝槽微構造則主要對應于天然堤微相，而底面微構造正好與之相反。
  2. 1. six rules of studying out the assessment index and the method of founding the comprehensive safety assessment structure system of the levee engineering are discussed. also, the design of safety evaluation aggregation of the system is lucubrated and the fourth - class divisional method of safety grade is ascertained

    主要研究內容如下： 1 、針對河道堤防工程特點，擬定了構建堤防工程安全綜合評價結構體系的原則；探討了堤防工程安全綜合結構體系的建立方法，並對安全評價集及安全綜合評價方法等內容進行了深入研究，確定了堤防工程安全評價的四級劃分法。
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