鍵控存取 的英文怎麼說

中文拼音 [jiànkòngcúnqǔ]
鍵控存取 英文
acce by key
  • 鍵 : 名詞1 [機械工程] （使軸與齒輪、皮帶輪等連接並固定在一起的零件） key 2 [書面語] （插門的金屬棍子）...
  • 控 : 動詞1 （告發;控告） accuse; charge 2 （控制） control; dominate 3 （使容器口兒朝下 讓裏面的液體慢...
  • 存 : 動詞1 （存在; 生存） exist; live; survive 2 （儲存; 保存） store; keep 3 （蓄積; 聚集） accumulat...
  • 取 : Ⅰ動詞1 （拿到身邊） take; get; fetch 2 （得到; 招致） aim at; seek 3 （採取; 選取） adopt; assume...
  1. Because of the unique issues in the networks, including mobility - induced disconnection, network partition, high out - of - order delivery ratios and channel errors, the congestion control and the error recovery in the network is challenging. in this environment, the interaction between tcp and mac layer protocols, the affection of route protocols on the performance of tcp and the particular congestion control and error recovery mechanism are first discussed. then a particular transport layer protocol scheme based on the non - feedback mechanism is presented, with emphasis on the analysis and simulation of the key parameter

    文中主要討論了兩種不同網路結構中的無線tcp協議改進方案，其一在最後一跳為無線鏈路的網路環境中，針對基本tcp擁塞控制機制存在的缺陷，文中在現有解決方案的基礎上提出一綜合性的方案，其中包括無線鏈路的高誤碼率和連接斷開問題的解決，並重點對方案中出現的交叉層問題進行分析和模擬；其二，考慮的是分散式網路（ adhoc ） ，在文中較為詳細的分析了tcp和mac層機制間的相互作用、路由協議中造成tcp性能降低的因素、 adhoc網路中應採取的特殊擁塞控制和差錯恢復機制，在此基礎上提出了一種採用非反饋機制的解決方案，重點對方案中的關鍵參數進行分析和模擬，分析和模擬結果表明此機制可在很大程度上提高adhoc網路中tcp的性能。
  2. Containing or using ( record ) keys ( " a keyed record ", " a keyed access " )

    含有或使用（記錄）鍵的過程或說明，如鍵控記錄、鍵控存取。
  3. Plc, robot and cad / cam are called the three major pillars in the modem factory automation. plc, as the head of the three, has become the leading basic automatic equipment in the field of the industry control in the early 1980s " but as a matter of fact, plc being with the lack of friendly man machine interface, rnakes no close relationship between human and machineometimes it even can not be promoted and applied in some fields aiming at the situation mat those imported products are too expensive while domestic products are of rare famous brands, a plc man - machine interface - plc monitor is developedthis paper systemically introduces the developing procedure for the whole system, including how to design hardware and software system. especially emphasizing plc communication protocol. real time message accessing, lcd controller instruction set, definition of data construction for message & tag screens and how to display thern, assignment of internal resource of cpuealization in software among plc & manitor, file format defining a nd download of user data, etcplc monitor will compensate some weakpoints of plc, and extend the application rangeimultanneously enhance the performance of plc and increase the attached value of mechanical machines, undoubtedly it will see hight market prospect

    針對人機界面進口產品的高昂價格和國產品牌稀少的這一現狀，研製開發了一種plc人機界面? plc監控器。本文系統地介紹了整個系統的開發過程，包括硬體系統、軟體系統的設計及實現，重點介紹了plc通信協議，監控器的基本工作原理以及期望實現的功能，監控器電源電路、 sram存儲器掉電保護電路、 cpu監控器電路、按鍵輸入電路的設計及按鍵狀態的讀入，時鐘信息的設定與讀取， cpu液晶顯示器指令系統，信息畫面及標簽數據結構的定義及顯示方法， cpu內部資源的分配，監控器與plc通信的軟體實現，文件格式的定義以及畫面數據的下載等。 plc監控器彌補了plc一些方面的不足，可以擴大plc的應用范圍，提升機械設備的檔次，增加設備的附加價值，具有一定的市場前景。
  4. This dissertation analyzes detailed research about some key technology and security policy, such as secure saving and getting between agents, secure communication between agents and hosts or agent proxy servers, mobile agent self - safe, safe transfer and control and timestamp, md5, dsa, identity authentication, digital signature etc. the insecure, single problems are resolved gradually, the whole safe framework needs to synthesize the consideration and form further

    由於很多安全問題之間也有相互制約，只能根據實際情況，找到最適合實際需要的安全策略。接下來對某些關鍵技術，諸如移動agent之間， agent與主機、代理服務器之間的安全存取資源，移動agent自身保護，安全地傳輸與控制，安全的通信，時間戳技術，消息摘要，數字簽名身份認證等安全策略，進行較詳細的剖析研究。
  5. This system is developed based on high performance, low cost and many controllers inside of the embedded processor, and enlarged gpio for the plat of the hardware and software. this system is applied to the high - speed numerical control carving machine. show the operate interface by lcd, input the control code from the keyboard, the data is readed from the usb interface and store that in sdram

    本系統應用於高速數控雕刻機，以lcd為人機可視化操作界面，以編碼鍵盤為操作控制部分，以嵌入式處理器s3c44b0x晶元為核心，文件數據經usb口讀取u盤中的雕刻數據文件暫存於sdram中，經嵌入式處理器進行相關演算法處理，得出相應參數傳送到fpga ，由fpga控制輸出脈沖和脈沖間延時，通過高速光耦隔離（ 2mbit / s ）后輸出，控制步進電機的運轉。
  6. The present application status of gps technique in land management is expounded, especially, the status of establishing land use database for county ( city ) level is emphatically introduced, and its main problems are analysed. the conception, characteristic, and application of all kinds of positioning methods using gps are introduced. the technique scheme of land surveying control network and the technique scheme of acquiring high accuracy data of land resources using gps technique are designed, and the realization method of key technique is indicated

    闡述了目前我國gps技術在土地資源管理中的應用狀況，重點介紹了縣（市）級土地利用數據庫建設的現狀，分析其存在的主要問題；介紹了各種gps定位方法的概念、特點及應用；研究設計了土地測量控制網的技術方案和gps技術獲取高精度土地資源變化數據的技術方案，指出了關鍵技術的實現方法；探索了gps技術在土地管理中其它方面的應用。
  7. The theory and techniques of modeling method related to petri net have been mature today, so we extend some functions based on it and construct the color extended petri net ( cxpn ) suitable to engineering design and project management. considering price, efficiency of retrieving and storage for data model, and degree of technologies maturity and so on, we choose rdbms to store data model of edwfms. because engineering design process has the properties of long duration, this paper presents a design transaction model of long transaction management so that it supports characteristics of engineering design process

    由於目前商用工作流管理系統中petri網建模方法的應用已經比較成熟，所以本文以petri網的建模方法為基礎，對其進行相應的擴充，構造出適合於工程設計項目管理業務流程的著色擴充petri網（ cxpn網）建模方法；綜合考慮價格、數據模型的存儲與檢索效率以及技術成熟度等因素，選取關系數據庫對工程設計項目管理工作流（ edwfms ）系統的對象數據模型進行存儲；對于工程設計過程中的長事務管理給出了支持協同工作的擴展事務模型，同時對長事務管理中的幾個關鍵技術進行了研究；提出了基於版本樹的資源對象版本管理模型，對復雜的資源版本進行控制；最後，給出了支持分散式工程設計項目管理工作流系統的擴充c s應用體系結構。
  8. What ' s more, with fundamental research, the following solutions were put forward : database connectivity technology, which can help to implement this system which works in client / server mode, the way of using ole ( object linking and embedding ) to solve the storage and retrieval problems of blob ( binary large object block ) data type and the method of directly giving the database system ' s operating purviews to right users with the application of dbms ' s authentication mechanism, which help to control database ' s access

    這些關鍵技術包括數據庫連接技術，以實現客戶/服務器模式下的數據庫開發；用ole技術解決大文本數據存取問題；結合dbms自身鑒別機制，將數據庫系統權限賦予用戶，以控制用戶對數據的訪問。最後，本文對南京物流公司管理信息系統的開發工作進行了總結，並展望了開發運輸類公司mis的發展方向。
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