擬低微分方程 的英文怎麼說

中文拼音 [nǐdīwéifēnfāngchéng]
擬低微分方程 英文
quasi harmonic differential equation
  • 擬 : 動詞1. （設計; 起草） draw up; draft 2. （打算; 想要） intend; plan 3. （模仿） imitate
  • 分 : 分Ⅰ名詞1. （成分） component 2. （職責和權利的限度） what is within one's duty or rights Ⅱ同 「份」Ⅲ動詞[書面語] （料想） judge
  • 方 : Ⅰ名詞1 （方形; 方體） square 2 [數學] （乘方） involution; power 3 （方向） direction 4 （方面） ...
  • 程 : 名詞1 （規章; 法式） rule; regulation 2 （進度; 程序） order; procedure 3 （路途; 一段路） journe...
  1. With the ever - advancing testing requirement in the checking and controlling field and the development in both the electronical techique area and the computer techquice area, the traditional testing instrument increasing can n ' t meet the demand of the computer time. the traditional instrument is expensive, single - functioned, inadaptable, and low - automationed, and can n ' t conduct comprehensive analysis and evaluation on the system that is examined, which has : a direct effect on the improvement of testing quality as well as the testing standard

    隨著測控領域不斷提高的測試要求以及電子技術、計算機技術的迅猛發展，傳統的測控儀器己越來越不能滿足時代的要求（傳統儀器價格昂貴、功能單一、適應面窄、自動化程度低，而且不能對被測系統綜合分析和評估，直接影響著測試水平和質量的提高） ，微機化、自動化、柔性化的虛擬儀器系統是當今測控儀器的發展方向。
  2. This paper first begin with the connotation of virtual instrument technology, study and discuss the criterion and the working theory of usb deeply. on the principle of usb1. 1criterion, using usb interface chip usbn9604 and low consumption mirochip c8051f231, we designed the available interface of usb bus and its controlling software, turn the communicating function based usb bus between computer and testing device. second based on the developed interface of usb bus, using microchip pic16c62 and a mount of relays, we designed the multiswitching scanner and its controlling software to complete the funtion of accesses swithing in testing system. third calling the api function inside the windows using vb programming language, communicat with the impelling program of selected hid, achieve the function of testing instrument with usb interface, complete the development of upside software faced testing. at last, based on the deep studying of pcb testing method, used the developed multiswithing scanner and software faced testing, combinated with necessary testing instrument, we constructed the pcb testing system and analized the testing result simply

    論文首先從虛擬儀器的技術內涵出發，深入研究和討論了通用串列總線usb規范及工作原理，並依據usb1 . 1規范，採用usb介面晶元usbn9604和低功耗微處理器c8051f231設計開發了通用的usb總線介面及其控制固件，實現了通用計算機與測試設備之間基於usb總線的通信功能；其次，在所開發的usb總線介面的基礎上，使用微處理器pic16c62和多路繼電器開關，設計開發出實現測試系統中測試通道切換功能的多路通道掃描器及其控制固件；再次，採用vb語言編程，調用windows內部api函數，與選定hid類驅動程序進行通信，實現usb總線介面測試儀器功能，完成面向測試的上層軟體開發；最後，在深入研究印刷電路板測試方法的基礎上，利用已開發的多路通道掃描器和面向測試軟體，結合必要測試儀器組建印刷電路板測試系統，並對測試結果進行了簡要的誤差分析。
  3. Based on several actual cases, the temperature control measures for roller compacted concrete ( rcc ) gravity dam and arch dam such as structural jointing for construction ; lowering of concrete placing temperature ; water pipe cooling ; surface insulation ; inclined - layer placing etc., the measures to improve the material properties i. e. the application of micro - expanding concrete ; enhancement of material crack - resistance property and the requirement for the simulative analysis on both the temperature field and stress field as well as some problems concerned are summarized herein on the basis of the analysis on the material properties ; construction characteristics and the changing characteristics of the thermal stress of roller compacted concrete

    摘要從碾壓混凝土的材料特性、施工特點、溫度場溫度應力的變化特點入手，結合幾個工程總結了碾壓混凝土重力壩、拱壩的分縫方式，降低澆築溫度、水管冷卻、表面保溫、施斜層碾壓等溫控措施，採用微膨脹混凝土、提高材料抗裂性能等改善材料性能措施及碾壓混凝土溫度場、應力場模擬分析的要求和應注意的問題。
  4. The results of stochastic simulation indicate : ( 1 ) the reliability of simulating result is quite different by different simulation methods ; ( 2 ) sequential indicator simulation is a much more preferable way for the simulation of complicated heterogeneous reservoirs than truncated gaussian simulation, ( 3 ) the result of the former is more reliable matching with the true cases, while the latter shows a lower accuracy

    結果表明： （ 1 ）不同模擬方法建立的微相分佈模型的可靠程度不同； （ 2 ）截斷高斯模擬不能真實再現相序關系復雜的微相分佈，結果出現局部失真現象； （ 3 ）序貫指示模擬適用於非均質性復雜的低滲儲層微相展布的描述，結果具有可信性和預測性。
  5. The relationship between periodical fluctuation of the core diameter and srl was analyzed. the method predicting srl using core diameter data fft transform was found. the formula by shadow ' s length and shadow ' s position of two vertical directions to calculate core diameter was found

    本文又推導了利用無透鏡測徑系統相互垂直兩方向的影長和影位置信息來計算線芯直徑的公式；並通過計算機模擬程序分析了該公式的誤差，得到將公式誤差降低到10 ~ （ - 2 ）微米以下的修正方法。
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