陣風系數 的英文怎麼說

中文拼音 [zhènfēngxìshǔ]
陣風系數 英文
gust factor
  • 陣 : Ⅰ名詞1 （作戰隊伍的行列或組合方式） battle array [formation]: 布陣 deploy the troops in battle fo...
  • 風 : Ⅰ名詞1 （空氣流動） wind 2 （風氣; 風俗） practice; atmosphere; custom 3 （景象） scene; view 4 ...
  • 系 : 系動詞（打結; 扣） tie; fasten; do up; button up
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 陣風 : gust; thud; blast of wind; gust of wind; puff of wind
  • 系數 : [數學] coefficient; ratio; modulus; quotient; factor
  1. The research object of this thesis is a chip - array that is fixed on one of printed circuit boards ( pcb ), which are located in a forced air field ( forced convection ) in an electronic case ; and from the essential equations of airflow we can deduce the mathematical model of the turbulent flow ; then we can establish the finite element algorithm and apply the fe software to work out the equations of turbulent flow, finally we can use the software to display and analyse the field of flow and temperature

    本文以處于強迫空氣對流流場中的某pcb板及其板上的電子元件陣列作為研究對象，推導了紊流流場的數學模型，並建立了相應的有限元求解格式，應用有限元法分析軟體對該系統的紊流流場和溫度場進行了模擬分析：解算出pcb板上各電子元件的溫度分佈；並提出了用於求解系統風道特性曲線的cfd方法。
  2. In light of market risk, there are sensitivity measurement method and volatility measurement method as well as the concepts about risk measurement, such as variance, duration, 3 - coefficient, 5 - coefficient and value at risk. and in light of credit risk, there are accounting - based ratio measurement method and volatility - based measurement method, as well as the related concepts, such as credit rating, z - score, transition matrix, expected default frequency

    其中，針對市場風險度量的方法包括靈敏度測量風險方法和波動性測量風險方法，與之相關的風險度量概念有方差、持續期、系數、類系數和在險價值；針對信用風險度量的方法包括基於財務比率的風險測量方法和基於波動性的風險測量方法，與之相關的風險度量概念有信用評級、 z分數、轉換矩陣、違約頻率。
  3. Independent air hating system, oven with sealed round hole array with hot air curtain, automatic oven temperature detector and control, dro, application of second time reflex of heat energy and centralize waste discharge result in energy and cost saving

    獨立的熱風加熱系統，密閉式圓孔陣列風幕式熱風乾燥烘箱，烘箱溫度自動檢測控制、數字顯示，熱能二次迴流利用，集中排廢裝置，有效地降低能耗、節約成本。
  4. At first we compare some kinds of investment loss function, analyze their defects and take the eignvalue of covariance matrix as the measurement of investment risk, the principle component as the information of investment market, sn and cv of the principle component as balance relationship between the profit and risk. then different portfolio selection indexes are given, and new portfolio selection models are presented, which are different from h. markowitz model. at last an example is also given

    本文首先比較了幾種常用的投資損失函數，在分析它們的缺陷與不足的基礎上，提出了採用收益率的協方差矩陣的特徵根刻畫投資的風險；用主成份綜合反映證券市場的信息；分別採用主成份的差異系數與信噪比反映投資組合的期望收益率與風險之間的均衡關系，並以此作為投資組合損失最小化與收益極大化的指標；得到了不同於h
  5. Discusses the characteristic values on individual stock risk with the standard deviation, variance ( 2 ), standard deviation coefficient ( cv ) and coefficient measurement, construct the individual on stock ' s statistics index system on investment risk. 2. discuss the characteristic of standard deviation, variance, variance - covariance matrix to measure the investment risk of stock portfolio

    第二章「證券投資風險的度量」分為三個小節： 1 、討論單個證券風險用標準差（ ） 、方差（ ~ 2 ） 、變差系數（ cv ）以及系數度量，構造了單個證券的投資風險統計指標體系； 2 、討論了用標準差和方差、方差?協方差矩陣、方差?協方差矩陣的特徵值來度量組合證券的投資風險； 3 、計算了衡量證券組合系統性風險的系數值，並分析了系數的含義和預測能力的可靠性。
  6. In this thesis, the decoupling unit of vav system is designed in the way of feedforward conpensation. then the transfer function matrix of the feedforward conpensation decoupling unit of the 5 inputs & 5 outputs vav system is worked out. the decoupling conpensation unit can change the transfer function matrix of the open loop and closed loop control system into diagonal matrix, so that the coupling among the five control loops is eliminated, and vav system is decoupled

    本文採用前饋補償法設計了變風量空調系統的解耦補償器，並得出了五輸入、五輸出變風量空調系統前饋補償解耦器的傳遞函數矩陣，該解耦補償器可以使本文所研究的變風量空調控制系統的開環傳遞函數矩陣和閉環傳遞函數矩陣都變換為對角矩陣，從而解除五個控制迴路之間的耦合，使變風量空調系統實現解耦。
  7. Multi - span plastic greenhouse structure design theory has been studied systemic which include design loads, design methods and system optimization designs aimed at the situations above - mentioned, meanwhile, theory analysis and designs have been completed for series east - china multi - span plastic greenhouses in accordance with the local climate characteristic. some elementary conclusions are summed up : ( 1 ) in the aspect of multi - span plastic greenhouse structural design loads researches, based on the contrast analysis of loads provided in foreign and chinese standards, analysis and discussion are mentioned about the definition loads, the estimation and load cases for multi - span plastic greenhouse structural design in details, some conclusions are summed up first : i, wind load : under the present conditions, it is unnecessary to

    得到一些初步的結論： （ 1 ）在連棟塑料溫室結構設計荷載研究方面，從分析比較國外關于溫室建築及我國工業與民用建築設計荷載規范的角度出發，針對連棟塑料溫室結構設計中的荷載定義方法、計算取值、荷載組合等進行了較深入的探討和分析，首次得到以下結論： 、風荷載：在現有條件下，考慮風壓高度變化系數、陣風作用因子和風荷載體型系數，按中國建築結構荷載規范（ cbj9 ? 87 ）計算風荷載是可以的，不必進行重現期博士學位論文摘要修正。
  8. The modified upwind difference scheme for two phase miscible displacement with the diffusion coefficient being a matrix

    擴散系數為矩陣形式的兩相混溶驅動問題的修正迎風差分格式
  9. In this paper the author first analysed the wind effects on bridges, and wind - induced vibration is described in particular. second, two methods for wind effects on bridges are discussed, which include the method of gust response factors and the method of buffeting response spectrum. thirdly, from the requirement of practical engineering, the accurate analysis method is simplified according through the parametric analysis, the formula for engineering application of the second method is presented. finally, a realengineering example illustrate the usage of the two methods. and the result of the engineering example show that the stress calculated by buffeting response spectrum method is larger than which calculated from the gust response factor methed, also the temporary method of wind resistant ways for bridge in cantilever state is presented

    第二，分析了橋梁抗風分析的兩種方法，包括基於陣風系數的陣風分析法和抖振反應譜分析法。第三，從工程實際應用出發，通過參數分析，對精確方法進行適當簡化，推導出了橋梁在懸臂施工中的抖振反應譜法的實用計算公式。最後，通過工程實例，採用兩種抗風分析方法分別進行了分析計算，實例分析的計算結果說明反應譜法計算得到的內力大於按陣風系數法得到的內力；同時提出了在懸臂施工狀態工程施工中的臨時抗風措施。
  10. Here the theoretical model of vav system is set up for the first time. besides, the transfer function matrix of the 5 inputs and the 5 outputs is established by combining the theoretical analysis with the data analysis of experiment. then the non - linear mathematical model of the five loops is delt with in two method : in the first method, taylor progression is applied near the working point of the system in order to make the volume of change between the output and the input become similar to a linear relationship. in the second mothed, the non - linear mathematical model realize linear by means of being devided into sections. the study shows that both the motheds are effective in dealing with the non - linear issue in vav system

    本文首次建立了變風量空調系統的機理模型，並通過採用機理分析和實驗數據分析相結合的方法，建立了所研究的五輸入、五輸出的變風量空調系統的傳遞函數矩陣，並對這五個控制迴路的被控對象的非線性數學模型，採用兩種方法加以處理：第一種方法是在系統的工作點附近進行泰勒級數展開，使輸出的變化量與輸入的變化量之間呈現近似的線性關系；第二種方法是將非線性的數學模型進行分段線性化，即用分段線性化來逼近非線性化的模型。
  11. The more details about author ' s work are as follows : 1 ) the mathematical models of solar array wind turbine, diesel, battery, converter and inverter are presented based on quasi - steady state theory. by using the models, the power flow may be determined corresponding to solar radiation and wind velocity data so that the long - term performances of wsdbhps can be predicted

    具體說來本文的工作及創新點如下： 1 ）建立了光伏陣列、風力發電機組、蓄電池、柴油機和逆變器的穩態數學模型，利用該模型可以計算出對應實時的太陽輻射強度和風速下系統的實時能量分佈，為預測系統功率流以及長期穩態性能打下基礎。
分享友人
分享到 Line

分享到臉書