程式包識別符 的英文怎麼說

中文拼音 [chéngshìbāozhìbiéfú]
程式包識別符 英文
package identifier
  • 程 : 名詞1 （規章; 法式） rule; regulation 2 （進度; 程序） order; procedure 3 （路途; 一段路） journe...
  • 式 : 名詞1 （樣式） type; style 2 （格式） pattern; form 3 （儀式; 典禮） ceremony; ritual 4 （自然科...
  • 識 : 識Ⅰ動詞[書面語] （記） remember; commit to memory Ⅱ名詞1. [書面語] （記號） mark; sign 2. （姓氏） a surname
  • 別 : 別動詞[方言] （改變） change （sb. 's opinion）
  • 符 : Ⅰ名詞1 （符節） tally （with two halves made of wood bamboo jade metal issued by a ruler to gener...
  • 程式 : form; pattern; formula; modality
  • 識別 : 1 （辯別; 辯認） discriminate; distinguish; discern; tell the difference; spot 2 [計算機] identif...
  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. The main research contents are as follovvs : after the analyzing of the process of making train diagram, according with its character, and take into account the trend of innovation, chooses the total solution based on the b / s architecture, 3 - tier operation distributed and 2 - tier data distributed to separate the data from operation and simplify the development and maintenance ; the e - r data model that is accord with the 3nf criterion is designed after analyzing the data structure of the train diagram system. emphasis on the permission security of the distributed system, take the view schema, coupled with the login authentication and permissions validation, to ensure the data accessing domination, and take the synchronization, error control, and restore capability to advance the data security ; on the basis of b / s solution architecture, after comparing the existing transportation technologies, b - isdn and adsl is selected as the major solution architecture based on the package - svvitched networks. furthermore, error control, firewall, and encryption techniques are introduced to prevent the hacker attack and ensure the networks safety

    論文的主要研究內容包括：對目前我國列車運行圖管理體制和編制流程進行詳細分析，根據其「幾上幾下」的特點，並結合未來「網運分離」體制改革的變化預測，選擇採用與之相適應的基於b s體系架構、三層業務分佈、二層數據分佈的整體方案，實現業務與數據的分離，降低開發與應用過程的復雜度和總體成本；對列車運行圖系統的數據信息進行分析，設計符合3nf規范的數據e - r關系模型，並著重研究處于分散式系統中的列車運行圖數據信息的訪問權限和數據安全問題，提出以視圖模式結合用戶識別權限審定實現數據權限劃分，以並發處理、容錯技術、恢復技術提高系統的數據安全性；在基於b s架構的系統整體方案基礎上，對當前多種數據傳輸技術進行分析比較，採用b - isdn為主幹網、 adsl為接入端的基於公用數據網路分組交換技術的系統網路體系結構，並針對網路自身安全性和黑客攻擊與侵入問題，詳細討論綜合採用差錯控制、防火墻、數據加密解密等技術手段提高系統的網路安全性能。
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