derived data type 中文意思是什麼

derived data type 解釋
導出數據類型
  • derived : 導生的
  • data : n 1 資料，材料〈此詞系 datum 的復數。但 datum 罕用，一般即以 data 作為集合詞，在口語中往往用單數...
  • type : n 1 型，類型，（工業產品的）品種；風格，型式。2 典型，榜樣，樣本，樣板，模範，範本；典型人物；具...
  1. For parameter a, there is a close relationship exist between a ( 9, sr ) in two different radar incident angle that can be expressed as : with considering the effects of soil texture, we get the final expression of the inversion model : where mv ( t1 ), mv ( t2 ) is volumetric soil moisture content in two different temp, c, d is soil type related parameters, and v ( t1 ), s ( t2 ) is coresponding bare soil radar backscattering coefficients. inversion results show that for the c band hh polarized radarsat scansar data with a range of incidence angle from 20 to 40, the soil moisture change value can be derived with an acceptable accuracy using the above model. the temporal and spatial soil moisture change patterns are associated with rainfall and vegetation cover, as well as the soil hydraulic characteristics

    利用最新發展的電磁波散射模型研究了不同植被覆蓋地表雷達波對地表土壤水分的敏感性，建立了半經驗植被雷達後向散射模型; 2 ） .研究發現在農作物等矮小植被覆蓋地表，植被層直接後向散射與植被類型相關，且在植被生長期，雷達後向散射系數對植被含水量的敏感性要高於對植被高度變化的敏感性; 3 ） .解決了單參數雷達地表土壤水分反演問題中，雷達入射角和地表粗糙度的影響這一難點問題; 4 ） .利用土壤介電模型校正了不同土壤類型對反演地表土壤體積含水量的影響; 5 ） .在以上成果基礎上，建立了完整的單參數雷達地表土壤水分變化探測反演演算法，經地表驗證，模型反演地表土壤水分變化值的精度為rmse = 0
  2. A derived data type is a derivative or structure of existing base types or other derived types

    派生數據類型是已有的基本類型或其他派生類型的一個派生物或結構。
  3. The normalizedstring data type is derived from the string data type

    規格化的字元串數據類型是從字元數據類型里派生出來的。
  4. When a data type is derived from a list data type, the following constraining facets can be used

    從數據類型列表中派生數據類型時，可使用下列約束方面：
  5. The token data type is also derived from the string data type

    符號數據類型也是從字元串數據類型中派生出來的。
  6. All numeric data types are derived from the decimal data type

    所有數值數據類型都是從小數數據類型里派生出來的。
  7. All string data types are derived from the string data type itself

    所有字元串數據類型都是由字元串數據類型本身派生出來的。
  8. If a complete object, a data member ( 9. 2 ), or an array element is of class type, its type is considered the most derived class, to distinguish it from the class type of any base class subobject ; an object of a most derived class type is called a most derived object

    如果完整對象，數據成員或數組元素具有類類型，則其類型被看作最終派生類，以之與此類的任何基類子對象的類型區別；一個最終派生類類型的對象被稱為最終派生對象。
  9. The following example defines a user - derived data type that creates a representation of postal codes in the united states, limited to strings that match a specific regular expression

    以下示例定義一個用戶導出的數據類型，該數據類型創建美國郵政編碼的表示形式，該表示形式被限制為與特定正則表達式匹配的字元串。
  10. Conversions from a data type or object type to a type derived from it

    之間的雙向轉換從數據類型或對象類型到其派生類型的轉換
  11. Gets or sets the name of the built - in data type or simple type from which this type is derived

    獲取或設置內置數據類型或簡單類型的名稱（該類型從其中派生） 。
  12. For example, integer is a special case derived from the decimal data type

    例如， integer是從decimal數據類型導出的特殊情況。
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