expression data type 中文意思是什麼

expression data type 解釋
表達式數據類型
  • expression : n 1 表現，表示，表達。2 詞句；語句，措辭，說法。3 表情，臉色，態度；腔調，聲調。4 【數學】式，符...
  • 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. According to the program structure of ansi c, some syntax - tree - nodes are designed in front - end, including function, block, data structure, type, expression, identifier and so on. syntax tree is divided into three levels, namely program level, function level and block level, which are useful for analysis of syntax and semantic in compiler as well as transferring syntax tree into rtl. retargetable compiler mainly includes intermediate representation, machine description and interface technique between compiler and machine description

    編譯前端的實現技術包括詞法分析、語法語義分析和中間代碼生成技術等，針對ansic的程序結構，分別設計了函數、塊、數據結構、類型、表達式、標識符等語法樹結點，並將語法樹分成編譯層次、函數聲明和塊三個不同層次，使語法樹具有清晰的層次結構，有利於編譯程序的語法和語義分析，以及從語法樹到rtl中間表示的轉換。
  2. 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
  3. Is a numeric expression of any numeric data type

    是任意數值數據類型的數值表達式。
  4. Class using the specified array data type and code expression indicating the number of indexes for the array

    用指定的數組數據類型和指示數組索引數的代碼表達式初始化
  5. Class using the specified array data type name and code expression indicating the number of indexes for the array

    使用指定的數組數據類型名和指示數組索引數的代碼表達式初始化
  6. Describes expression evaluator syntax, the data types that the data transformation pipeline uses, data type conversion, and expression elements

    介紹了表達式計算器語法、數據轉換管道使用的數據類型、數據類型轉換和表達式元素。
  7. If no data type is specified, the type of the expression will be used as the default

    如果未指定數據類型，將使用表達式的類型作為默認類型。
  8. The expression cannot reference an alias data type

    該表達式不能引用別名數據類型。
  9. Any constant or constant expression that evaluates to the data type of the parameter

    參數，為必選項。任何計算為參數數據類型的常數或常數表達式。
  10. Either expression is a floating - point data type

    每個表達式都是浮點數據類型（
  11. 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。
  12. When simple expressions are combined to form a complex expression, the data type of the result is determined by combining the rules for the operators with the rules for data type precedence

    當將簡單表達式組合為復雜表達式時，結果的數據類型取決于運算符規則與數據類型優先級規則的組合方式。
  13. In this paper, we firstly put forward a distributed wfms architecture based on corba technology to meet the requirements such as performance, scalability, reliability, support of invoking extern application and data distributing, we then implement its prototype with java and also do a case study ; secondly, we design a process definition language described by xml, which has a strong ability of expression ; thirdly, xml is adopted to describing the workflow relevant data and transferring the parameters, which handles the complex data type very well ; finally, the further research task is pointed out

    本文首先提出一個基於corba技術的分散式工作流系統體系結構以滿足系統在性能、可擴展性、可靠性、外部應用調用支持和數掘分佈等方面的要求，然後以java語言實現了其原型系統並做了初步應用測試；其次，設計了一種具有較強的描述能力xml過程定義語言；第三， xml還用於工作流相關數據變量的描述和參數封裝與傳遞，對復雜數據類型提供了較好的支持；最後，指出需要繼續完成的研究任務。
  14. One expression is a numeric data type, and the other is

    一個表達式為數值數據類型而另一個表達式為
  15. The first is the expression to be converted, and the second is the destination data type or object class

    第一個參數是將要轉換的表達式，第二個參數是目標數據類型或對象類。
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