通風系數 的英文怎麼說

中文拼音 [tōngfēngxìshǔ]
通風系數 英文
coefficient of ventilation
  • 通 : 通量詞（用於動作）
  • 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
  • 通風 : 1 （使空氣流通） ventilate; air 2 （透氣） be well ventilated 3 （透露消息） divulge information;...
  • 系數 : [數學] coefficient; ratio; modulus; quotient; factor
  1. Finally, with caparisons of that three parapets properties cantilevered parapets has been adopt to the steel structure of light - weight buildings with gabled frames, numerical simulations have been carried out with that buildings, results of simulations show that device can also significantly reduce the area - averaged coefficient of wind pressure and high negative suction peaks on zones susceptible to wind pressure. formula has been proposed about the height of that parapet

    最後通過三種女兒墻的性能比較確定對門式剛架設置懸挑女兒墻進行數值模擬，結果同樣表明懸挑女兒墻能明顯地降低門式剛架屋面風荷載敏感區的負壓峰值及屋面風荷載體型系數，並給出了女兒墻高度限值公式。
  2. Brings forward the basic network cell model of symmetrical blast vault and asymmetric blast vault. then studies and analyses airflow in vault of main voltage switchyard hall of xiluodu hydropower station which is far cry and large numbers of airflow conflux, brings forward concept of “ virtual embranchment ” and corresponding basic network cell model, regresses calculate expressions of flux uniformity coefficient and impedance of “ virtual embranchment ” of vault of main voltage switchyard hall of xiluodu hydropower station

    而後又採用cfd數值模擬的方法對溪洛渡水電站主變洞排風拱頂這種多股氣流匯流的長距離通道內的氣流流動進行了分析，提出了「虛擬分支」的概念和相應的網路基元模型，並回歸得到了溪洛渡水電站主變洞排風拱頂各個排風「虛擬分支」風量均勻系數以及阻抗的計算公式。
  3. The research on calculating formula of coefficient of frictional resistance of bolting and shotcreting roadways

    錨噴巷道通風阻力系數的計算式研究
  4. So we consider five financial indexes includes stock b / p, e / p, current stock size, current stock stru and financial levge by the international tradition, then descriptive statistical test method and cross section statistical test method proved that b / p and current stock size have marked effect on the securities yield besides coefficient b. in the third chapter, the article fut forward a risk factor model, estimates yield sequences of every risk factor by weight regression, and then estimates each risk factor coefficient of different stock by time sequence regression, at last we can reckon the portfolio risk o2p and yield rp which consists n stocks

    結合國際慣例，文章考慮了股票的凈值市價比（ b p ） ，市盈率倒數（ e p ） ，流通規模（ size ） ，流通比例（ stru ）和財務杠桿（ levge ）等五個財務指標，應用描述性統計檢驗和橫截面統計檢驗等多種方法，結果表明，除系數以外，凈值市價比（ b p ）和流通規模（ size ）對證券收益率部有重要的影響。在論文的第三章，提出了一個基於多因素的風險因子模型，並用加權回歸和時間序列回歸等方法估計出了不同證券的各風險因子系數（類似於單指數模型中的系數） ，據此，即可衡量出一個包括n只股票的組合的風險_ p ~ 2和收益率r _ p 。
  5. ( 1 ) modeling of numerical analysis of frozen soil ventiduct roadbed by ann ( 2 ) developing the ann optimization design system for ventiduct roadbed in permafrost area ( 3 ) defining of the sequel learning tactic of three layer bp network ( 4 ) improvement on bp arithmetic in ann module

    （ 2 ）開發了凍土通風管路基優化設計神經網路分析軟體系統具有完整的前後處理、溫度場分析、設計方案優化等功能，能滿足工程應用的基本需要。還能夠作為數值分析子模塊，以標準com組件形式嵌入「青藏鐵路數字路基」 gis系統。
  6. H. m. jang, 1998, a theoretical model for the ventilation system of fu - de tunnel, 22nd national conference on theoretical and applied mechanics, r. o. c

    張鴻明， 1998 ，公路隧道通風系數效應-圖解法，中國機械工程學會第十五屆全國學術研討會，臺南。
  7. The above system realized the autogeneration of the membership functions and the control rules, greatly lessened the design period of the ventilation control system, and make it possible to on - line modify the control rules

    本文提出的神經模糊控制系統實現了公路隧道縱向全射流通風模糊控制模型隸屬函數和控制規則的自動生成，大大縮短了控制系統的設計時間，為通風控制系統的實時在線修改奠定了基礎。
  8. Specially, based on risk - metric and factor variables, the author discusses multi - factor asset pricing model. in theoretical analysis, the author attempts to release the assumption of index ' s random walk, proves a portfolio selection model suitable for the linear index level moreover, based on assets un - exchangeable, the author brings forward asset pricing models for b - shares, h - shares and non - circulated - shares. the author also brings forward multi - factor asset pricing model based on risk - metric indices, such as coefficient of beta, standard variance, standard semi - variance, average absolute deviation, value at risk, and factor variables, such as circulated market equity, exchange ratio, short - term historical return

    在理論分析時，作者嘗試放鬆指數水平滿足隨機遊走過程的假設，推導出指數水平呈線性趨勢的資產組合選擇模型；此外，作者基於資產不可交易這一假設，提出了b股、 h股和非流通股等情形的資產定價模型，並基於系數、標準差、標準半方差、平均絕對離差和風險價值等風險度量指標以及流通市值、換手率、短期歷史收益率等因素變量提出了四因素資產定價模型。
  9. In chapter 9 we summarize the whole paper, and explain the shortages of this paper and problems to further study. main conclusions of this paper are as follows : the first, state - owned funds have always been predominant in venture capital sources in china, and this caused the " government - operated model " which leads to excessive government ' s interferes and distorted venture capital contracts ; the second, limited partnership contract is better than incorporated company contract, because the former has obvious advantages in not only encouragement and controls, but also in investors " profits. however, this paper insists, incorporated company contracts will still be very popular in the near future because limited partnership still be illegal in most provinces of china ; the third, venture capitalists " share of profits in compensation clause of fundraising contracts is influenced by investors " attitude towards difficulties and obstacles of future investment

    本文研究的主要結論：第一，在我國風險資本來源中，政府風險資本一直居於主導地位，這造就了我國風險投資的「官辦官營」模式，使其契約機制從一開始就帶有「行政干預」的烙印；第二，有限合夥契約在約束機制、激勵機制、投資者收益三個方面都明顯優于公司制契約，因此是我國風險融資契約的發展方向，但由於有限合夥在我國受到法律限制，公司制契約在一定時期內仍是我國風險融資契約的主要形式；第三，融資契約報酬條款中的激勵系數受主體先驗概率影響，借鑒有限合夥契約，可對我國公司制融資契約進行改造與重構；第四，與債權契約、普通股契約相比，可轉換優先股契約可以有效緩解風險投資過程中的信息不對稱、降低代理成本，因此是我國風險投資契約的最優選擇。
  10. Secondly, theoretical models for time series, such as garch, egarch, tarch and garch - in mean, and the methods of parameter estimation are introduced. then, these models are employed to test the volatility in shanghai a - share, shanghai b - share, shenzhen a - share and shenzhen b - share. next, in chapter 4, we study the co - integration and test the granger causality between the four share indexes. finally, the spillover of volatility between a - shares and b - shares markets are tested

    第二，通過模型的比較分析，發現殘差基於t分佈的arch類模型較之基於正態分佈和ged分佈的arch模型能更好地刻畫我國股指收益率序列的特徵。第三，滬深a股在兩個階段的變化甚微，保持著非對稱效應，對利空消息的波動大於利好消息的波動，風險補償為正向，且風險補償系數的變化不大。
  11. Based on wind speed observation record with drawback, it is proved that the exponent expressing terrain roughness can be calculated according the monthly maximum wind speed records at various height levels. wind characteristics of bridge site are determined by statistical method

    針對橋址區風速觀測記錄的特點，證明了利用不同高度處月最大風速記錄推算地表粗糙度影響系數的可行性，並對通過最小二乘擬合得到的地表粗糙度影響系數進行統計分析，最終確定橋址區風特性。
  12. Computational fluid dynamics ( cfd ) techniques are used to study and understand fluid behavior in tunnels. by simulating complex specific operational cases, we can educe velocity or flux distribution in tunnel under different ventilation and resistance situation and determine the favorable operational procedures of the erlang mountain tunnel ventilation in a fire case. comparison has been made between a simulation and experiment for some cases in order to prove the cfd model is powerful, so that enables the study of cases for which experimental data is not available

    採用本文將隧道內的氣流看成是理想流體的一維恆定流動，通過對二郎山特長公路隧道半橫向通風系統建立隧道內的空氣動力學模型，利用計算機進行數值分析與計算，得出發生火災時，不同通風阻力條件下隧道中的風速分佈及流量分佈，並通過實驗室隧道模型實驗進行驗證與修正，依據研究結果給出了二郎山半橫向通風隧道的火災控制方案，從而解決了二郎山公路隧道通風對火災的控制問題，同時為半橫向通風公路隧道的火災通風提供科學的方法。
  13. In this paper, we have discussed the influences of supply air temperature, supply air quantity, supply air turbulence, as well as mixing ratio of supply unit. all of above parameters are important for the extension of the adjacent zone. consideration of all the parameters is essential for a good system design which can ensure the advantage of displacement ventilation

    本文研究了各種送風參數對鄰接區的大小的影響，結果表明：送風溫差、送風量、送風湍流度以及送風口的摻混量等因素對其都有重要影響，在設計時必須仔細平衡這些因素，確定合適的送風口和送風參數，才能使設計更加合理，充分發揮出置換通風系統的優勢。
  14. Avoiding the use of mathematic models, the fuzzy logical control ( flc ) system meets the control demands of the tunnel ventilation process well which is a nonlinear distribution system. but because of its lacking of learning and adaptive ability, many problems has emerged when using flc : the membership functions of the fuzzy variables cannot be changed, the fuzzy logical rules cannot be modified automatically when environmental variables such as traffic model, average exhaust, etc, are changed. for this reason, the paper uses fuzzy neural network control ( fnnc ) system to improve the control process

    模糊控制系統避開了數學模型，能很好適應公路隧道通風系統非線性和分散式參數特徵，但是模糊控制系統本身的學習和適應能力差，導致了模糊變量各語言值隸屬函數和控制規則不能隨著環境參數（如交通量、基準排放量等）的改變而自動調整和修改等問題，本文將具有強大學習能力的神經網路融合到模糊控制系統中，研究和探討了隧道通風模糊神經控制方法。
  15. Develops an unsteady mathematical model of ventilation system for the corridor in dam

    摘要以水電站壩體廊道通風系統為研究對象，建立了非穩態數學模型。
  16. With an introduction of the design method of vehicle air conditioning system, the selection standard, the calculation samples for interior and exterior air parameter of a vehicle in keeping with the characteristics of urban rail transit, the author discusses the requirements and characteristics of air conditioner in the air conditioning and ventilation system of vehicles

    摘要通過對城市軌道交通運輸特點的介紹，提出了一些可供其車輛空調系統參考的設計方法，以及車內外夏季空氣參數的選取依據及計算實例，討論了車輛空調系統的空調機組及通風系統的要求和特點。
  17. After estimating the sample model through a fine array data of time and calculating 6 coefficient, this study achieves their single index model and appraises the investment return level of index fund

    作者用周時間序列數據分別估計它們的樣本模型，並通過系數揭示各自相應的風險水平，得出了目前我國指數型基金的各自單一指數模型及其投資收益水平。
  18. Study on natural ventilation of multi - span plastic greenhouse using computational fluid dynamics

    連棟塑料溫室自然通風系統數值模擬研究
  19. The road tunnel ventilation system has strong non - linear characteristic and it is difficult to gain the precise mathematical model by using the traditional linear control theory, therefore, the modern control methods such as the fuzzy control become the trend for the road tunnel ventilation control. however, there are some difficulties with the establishment of the fuzzy membership functions and the rule base

    公路隧道通風系統具有很強的非線形特徵，傳統的線性控制理論難以獲得精確的數學模型，因此模糊控制等現代控制方法成為公路隧道通風控制的趨勢，但模糊控制存在隸屬函數、控制規則難以確定的問題。
  20. 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。
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