提前角變化率 的英文怎麼說

中文拼音 [dīqiánjiǎobiànhuàlǜ]
提前角變化率 英文
rate of change of lead angle
  • 提 : 提動詞（垂手拿著） carry （in one's hand with the arm down）
  • 前 : Ⅰ名詞1 （在正面的） front 2 （次序在先的） first; top 3 （過去的; 較早的） ago; before; preceding...
  • 角 : 角Ⅰ名詞1 （牛、羊、 鹿等頭上長出的堅硬的東西） horn 2 （古時軍中吹的樂器） bugle; horn 3 （形狀像...
  • 率 : 率名詞（比值） rate; ratio; proportion
  • 提前 : 1 （往前移） shift to an earlier date; move up （a date）; bring forward; advance 2 （事先） in a...
  1. For this purpos, from the point of the log geology, aimed at the actuality of the current fractured reservoir log geology interpretation and evaluation, based on synthetical analysis of the current domestic and foreign fruit of fractal dimension investigation of reservoir fracture, using the method and technique of fractal dimension, through the further discussion of the fractal dimension characteristics of m index and n index in the log interpretation archie model in a sample way and through the theoretic reasoning to the fractal dimension dfa and m index of fractured reservoir interval ' s log curve, according to the geophysical signification of the fractal dimension dfa of fractured reservoir interval ' s log curve shape : the more complicated the change of the curve shape is, the larger the its dfa value is, then the more complicated space structure of fracture and pore, then the higher value of m index of space structure of fracture and pore, and so on, the text propounds an improved method, based on box dimension, of covering log curve with scale grid, and by programming computes the dfa and its m index value of fractured reservoir interval ' s log curve, for instance, ac and rt curve, ect, then further puts this technique into application investigation, and makes analysis of application effects in the reservoirs located in l area of qx oil field from three aspects : 1. the dfa and its m index value of fractured reservoir interval ' s log curve, for instance, ac and rt curve, ect, which are derived from computing, is used to identify reservoir type by crossplotting m index with the product df _ acrt of fractal dimension of acoustical wave log curve and restivity log curve and by experiential discriminance plate of reservoir type in l area of qx oil field

    因此，對該區裂縫性儲集層的類型識別、孔滲特徵的測井地質解釋以及儲層裂縫的發育和分佈規律進行深入的研究便成為本文研究的出發點。為此，本文從測井地質的角度，針對當前裂縫性儲層測井地質解釋與評價的現狀，在綜合分析當前國內外儲層裂縫的分形分維研究成果的基礎上，利用分形分維方法和技術，通過對archie測井解釋模型中的m指數、 n指數的分形分維特性的深入淺出的論述以及裂縫性儲層段測井曲線分維d _ （ fa ）與m指數的理論推導，根據裂縫性儲層測井曲線形態分維值的地球物理意義? ?曲線變化越復雜，則其分維值d _ （ fa ）越大、裂縫孔隙空間結構越復雜、裂縫孔隙空間結構指數m值越高等特徵，提出了改進的基於盒維數的測井曲線網格覆蓋法，編程計算了裂縫性儲層段常規測井曲線（如聲波和電阻率曲線）上分形分維值及其m指數值，進而從以下三個方面對qx油田l區塊的裂縫油藏進行應用研究，效果十分理想： 1將計算得到的可變的m指數與聲波和電阻率分維之積df _ acrt進行交繪，採用儲層分維值分類技術統計分析這些參數變化的規律，並結合qx油田l區塊儲層類型經驗判別圖版，從而實現qx油田l區塊下白堊統的裂縫性儲層的類型識別。
  2. 1 m 0. 5, the phase - shifted angle 6 is controlled in term of sine law which makes the magnitude of resonant voltage track a reference sine voltage, and the resonant voltage is rectified, filtered, inverted and then the better sine - voltage output is obtained, theoretical analysis and experimental results show that for the resistive load and inductive load, the switches of leading leg of the phase - shift - controlled circuit are always turned on at zvs, and ones of lagging leg are turned on at zvs ( < 0 ) or turned off at zcs ( ( > 0 ), moreover, all switches in the low - frequency inverter are always turned on and off at zvs, the measured circuit efficiency for rated load reaches up to 88 %

    從功率單向流動角度出發，提出了一種lcc諧振型恆頻移相單相高頻鏈逆變電路拓撲，在調制系數0 . 1 m 0 . 5情況下，控制移相角按正弦規律變化，使諧振電壓脈沖列的幅值追蹤參考正弦電壓信號，經過整流、濾波、低頻逆變，從而獲得正弦度較好的輸出電壓。理論分析和實驗結果證明對于阻性負載或阻感性負載，移相全橋具有超前橋臂零電壓開通，滯后橋臂或者零電壓開通（ _ 0 ）或者零電流關斷（ _ 0 ）的軟開關特性，而低頻逆變器的各個開關均實現零電壓條件下的開通與關斷。
  3. First, introduce the reasons and character of current banking m & a, then summarized the former studies of the three ways of m & a to efficiency gaining : size versus size economy, m & a versus banks efficiency, and m & a versus shareholders wealth. then introduce the research approaches of m & a efficiency gaining, especially the approaches of m & a versus banks efficiency, such as parametric frontier approaches and non - parametric frontier approaches. in the following, through roe model and dea model to study the relations between size and efficiency, finding : middle size banks efficiency is higher, larger banks have n ' t scale economy, small banks have low em, and through directly analyzing m & a efficiency of four commercial banking m & a case in china, finding : the past - merged efficiency of shanghai pudong development bank has been improved, and others have been deduced, but after three years the efficiency increased little by little

    首先，分析了當前銀行並購的主要原因、特徵以及我國銀行並購的現狀與特點；接著對銀行效率水平的概念進行分析，綜述了國外對銀行並購與效率獲利的三方面的研究（考察銀行的規模與效率這種間接方式、比較並購行並購前後的效率以及並購行與非並購行的效率和考察上市銀行並購前後股東財富的變化這兩種直接方式）的有關文獻；再次對銀行並購與銀行效率獲利的分析方法進行了介紹，其中詳細地研究了前沿分析法：參數分析法和非參數分析法，並指出了這些方法的特點；然後運用財務比率分析法和dea方法對我國商業銀行規模與效率從間接角度對銀行並購產生的效率獲利進行了實證研究，結果發現：中等規模的商業銀行的效率最佳，而小規模的銀行的em值較低，同時大規模的商業銀行的規模無效；同時利用我國已發生的四個銀行並購案從直接的角度對我國商業銀行並購的效率獲利進行分析，結果發現：除上海埔東發展銀行在並購後效率提高，其他三家銀行並購后的效率都有所下降，但並購后第三年效率又逐漸回升。
  4. The main work includes : for the torsional vibrations of a rigid disk on saturated media, first, the dynamic governing equations are solved by the use of hankel transform and the general solutions in the hankel transform fields are formulated. then, considering the mixed boundary - value condition, the dual integral equations of the torsional vibrations of a rigid disk on saturated grounds are obtained, which can be reduced to the fredholm integral equations of the second kind and solved by numerical procedures. consequently, the dynamic compliance coefficient curves and the torsional angle amplitude curves versus the dimensionless frequency are presented and contrasted to that of the elastic one

    在前人研究的基礎上，本文基於陳龍珠等曾提出的一組實用飽和土波動方程，用解析或半解析的方法首次較系統而深入地研究了飽和半空間地基與基礎的扭轉振動問題，主要工作有：對于飽和地基上剛性圓板的扭轉振動，作者首先採用hankel變換求解了動力控制方程，得到了該控制方程在hankel變換域內的通解，然後由混合邊值條件建立了飽和地基上剛性基礎扭轉振動時的對偶積分方程，並將其化為易於數值求解的第二類fredholm積分方程，用數值方法計算了基礎的動柔度和扭轉角幅值與振動頻率的關系曲線，並將其與單相彈性介質情況進行了對比分析。
  5. This system has some specialty like : 1. for gis technique, it can manage transmission network graphically, display resource distributing clearly ; 2. with the class - template and rule - base technique, it can adapt the now - using and the coming equipment ; 3. providing a variety of report forms, it can help administrator an maintenance person to control the whole transmission network status with different angle ; 4. with the ameliorated auto and half - auto path configuration arithmetic, it can improve the network under - control efficiency and intelligence

    該系統具有以下的特點： （ 1 ）基於gis技術，對光纜等傳輸網路資源進行圖形化管理，使資源分佈顯示一目了然； （ 2 ）採用類模板和規則庫技術，使系統能適應目前和未來可能出現的設備； （ 3 ）提供靈活多變的統計報表，使維護人員和管理人員能從多方位多角度地掌握傳輸網網路運行情況； （ 4 ）採用改進的全自動和半自動的光電路路由配置演算法，提高網路的調度效率和智能化程度。
  6. Based on existing national standards, coercive clauses and related national and regional laws and regulations and by means of the new perspective of engineering supervision of information data, this system helps to achieve a standardized management of engineering supervision and solve problems out of present constructions due to low level engineering supervision and management. it also expands engineering material management scope, settles the problems of duplicate and arduous data processing, heavy workload and pressure, low efficiency due to manual work, poor work quality and delayed information feedback in conventional engineering material management. in the trend of computerization development in construction line, this system makes full use of computer and web technologies, sets up engineering technic and information management system applicable to engineering project supervision, realizes science - realization, standardization and intelligence of engineering supervision and guarantees a scientific and accurate quality evaluation and control of the work

    該系統以國家現行的規范、標準、強制性條文為基礎，結合國家及地方的有關法律、法規和行政規章及地方行政主管部門對工程技術資料的具體要求，用信息化的手段實現了工程施工技術資料檔案管理的規范化和標準化，從一個新的角度提出對工程施工技術資料的管理，成功地解決了目前存在已久的工程施工技術資料管理水平低的難題，拓展了工程施工技術資料管理的范圍，改變傳統的工程施工技術資料管理存在的數據處理重復、繁瑣、工作量大、手工操作效率低、質量差、信息反饋不及時等問題，適應建築行業信息化發展的需要，充分利用計算機技術及網路技術，建立適合於工程項目管理的施工技術資料管理信息系統，實現工程施工技術資料管理的科學化、規范化及智能化，實現對工程質量控制及評定的科學性、準確性。
  7. Along with changing of time lay a target to take place homologous variety, economist in all countries and finance to pass in the monetary policy to lie a target to study continuously in the monetary policy with correction, put forward a few influential as follows medium lie a target : the currency supplies quantity, interest rate, rate of exchange, bank a letter loan quantity, stock price index number

    本文介紹了西方國家中介目標的變化對中國的啟示。使用現代計量經濟方法分析了我國當前貨幣政策中介目標貨幣供應量指標以及實際利率和通貨膨脹率的效果。從貨幣政策中介目標發展角度對中國貨幣政策中介目標選擇及金融經濟環境發展提出了一些建議，對完善中國貨幣政策框架具有現實的指導意義。
  8. Four arrays of apparent resistivity are arranged at this measuring surface of granite sample symmetrically with symmetrical four - electrode method, and at an angle of 45 between any two adjacent arrays. the elastic constraint is exerted on 4 surfaces for parallel to the longest dimension of the sample. the samples are compressed along the direction parallel to the longest dimension of the cubic, and the variation of apparent resistivity during the whole loading process is observed

    在花崗巖標本測量面上，布設4條夾角互為45的視電阻率測線，將標本平行長軸方向的4個面加上彈性約束，沿標本長軸方向加壓，測量標本視電阻率隨軸向應力的變化，實驗結果為： 1巖石視電阻率變化形態顯上升-平穩-下降形態，但平穩段不明顯，時間很短2視電阻率開始下降時間，比其他受力方式實驗結果都早，約提前10 %破裂應力。
  9. In this essay, firstly the author analyzes the predictability of time series from china ' s stock exchange using three kinds of methods : arma model, neural network model and non - parametric estimation and gives evaluation on their performances while at the same time puts forward some conclusions deserving attention from both stock exchange supervising department and stock traders. secondly, the author examines the assumptions closely on which the above - said methods base and gives a detailed discussion on them, especially using garch model to test quantitatively the stability of china ' s stock exchange, afterwards drawing the conclusion that it is hard to make accurate prediction of price or return rate of china ' s stocks for none of the assumptions fully holds ground. thirdly, taking account of the difference between chinese stock traders as a whole and that of developed countries, the author gives a thorough analysis on the complexity and volatility of its ( traders " ) reaction to information and points out that the intrinsic heterogeneous and volatile reaction to information is an important reason for the almost unpredictability of the price or return rate in china ' s stock exchange

    本文首先採用arma模型、非參數模型以及神經網路模型對我國股市時間序列進行研究，對三種方法在分析我國股市時間序列的表現進行評價，並得出了一些對監管部門以及股票交易者有借鑒意義的結論；其次作者對三種模型分析我國股市時間序列的前提進行了討論，特別是利用garch模型對我國股市的系統穩定性進行了量化檢驗，得出了前提難以滿足導致準確預測我國股市價格或收益率困難的結論；第三，考慮到中國股市股票交易者群體與發達國家股市股票交易者群體之間的差異，作者借用行為金融學的理論成果對我國股票交易者對信息反應的復雜性和易變性進行了詳細分析，指出股票交易者對信息反應的異質性和易變性是造成難以準確預測我國股市的一個重要原因，考慮到我國股市以散戶為主導的特性將長期存在，因此將行為金融學的研究結論納入對我國股市時間序列的量化研究具有重要的意義；最後，作者從唯理預測與唯象預測之間差異的角度出發，指出了唯象預測的缺點並對我國股市時間序列的研究方向進行了展望。
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