非負變數 的英文怎麼說

中文拼音 [fēifùbiànshǔ]
非負變數 英文
nonnegative variable
  • 非 : Ⅰ名詞1 （錯誤） mistake; wrong; errors 2 （指非洲） short for africa 3 （姓氏） a surname Ⅱ動詞1 ...
  • 負 : Ⅰ名詞1 （負擔） burden; load 2 （虧損） loss 3 （失敗） defeat Ⅱ動詞1 [書面語] （背） carry on th...
  • 數 : 數副詞（屢次） frequently; repeatedly
  1. Suction gas pressure goes up as the compressor run at the lower speed in the lower burthen, and this is beneficial to lower systems energy - consume. when the system is controlled by wvf, the discharge change of the evaporator is not linear ; the electronic expansion valve is adopted to regulate the system superheat degree, and the controlled object is parameter time varying, accordingly, the time varying controller should be adopted

    在負荷較小時，壓縮機採用低速運轉，吸氣壓力升高，這對系統降低能耗是有利的；變頻控制時，蒸發器製冷劑流量的變化並非線性；系統中採用電子膨脹閥進行過熱度控制，被控對象具有參數時變的特性，相應地宜採用變結構的控制器。
  2. The feasibility of decomposition of transition firing sequence, the application of them in the detecting lfs and the reverse course of decomposition - synthesis are discussed. they provide theoretic basis for our algorithm in the field of petri net. supported by the above, two main part is included in the algorithm : at first, x is transacted according to the following method in order to get a set of xb named as basic vector of x which is the firing count vector of a directed path without circle if md is reached from m0 in the rg ( m0 )

    在變遷序列分解的指導思想下，我們的演算法主要通過以下兩步工作完成： （ 1 ）首先對給出的已知條件中滿足狀態方程的n維非負整數向量進行處理，得到一組x的基礎向量x _ b ，使得在petri網的可達標識圖中，若存在一條由m _ o到m _ d的有向無環路，則x _ b為這樣的路上變遷引發序列的發生數向量。
  3. The numerical results indicate that the deformation within the solid inner core is very small. however, in the fluid outer core, the changes of the displacement with relatively low spherical harmonic degree ( n < 10 ) is very complicated via the radius, due to the resonance near the eigenfrequenies of the core long - period oscillations. while the spherical harmonic degree of the loading is larger than 10, the deformation and the gravitational perturbation in the core are very small, and the earth ' s deformation response is dominantly represented as the radial displacement in the elastic mantle

    研究了地球在日月引潮力和表面負荷作用下的形變特徵，數值計算結果表明，在固體內核中的形變很小，由於在長周期核模本徵頻率附近的共振，液核中低階（ n 10 ）位移隨半徑的變化非常復雜，當負荷階數超過10時，地核中的形變和擾動位都很小，地球的響應主要表現為彈性地幔中的徑向位移，且隨深度增加急劇減弱，地表負荷love數與信號頻率的依賴關系很弱，給出了體潮love數計算的一種有效的近似處理方案。
  4. Huadi has cultivated a famous brand in the urban electricity network equipment industry with our emphasis on technology, quality, and honesty, while maintaining the standards of high efficiency, staff recognition, and innovation

    產品性能指標符合jb t10318 - 2002油浸式非晶合金鐵心配電變壓器技術參數和要求，該產品與s11產品性能比較，其空載損耗僅為s11空載空載損耗的33 ，負載損耗相同。
  5. But modern electrohydraulic servo systems have obvious nonlinear characteristics and often are required to have the ability to trace any curve function and endure relatively big outer disturb. so the working dot of the system changes greatly during the working process, which makes the linear model inapplicable

    然而電液伺服系統中存在著明顯的非線性特徵且近代電液伺服系統往往要求系統具有點點跟蹤任意非直線函數的能力並能夠承受較強的外負載干擾，因此工作過程中系統的工作點在較大的范圍內變化，從而使增量線性化模型難于奏效。
  6. This paper establishes the linear model of hydro - turbine and deducts its transfer coefficients. then the optimized operation parameters are gained in the frequency disturbance and load rejection simulation. through comparing dynamically, this paper analyses the impact on its dynamic performance if some governing system parameter changes

    在研究小波動情形時，即系統在穩定工作工況點附近小瞬變時，可以把非線性系統進行線性化處理;本文建立了水輪機調節系統的線性化模型，推導了其中的傳遞系數;對水輪機調節系統的頻率擾動和機組突甩負荷工況進行了模擬試驗，整定了最佳調節參數;通過動態比較，分析了調節系統參數改變對其動態性能的影響。
  7. Integrating the results obtained by nonlinear fem analysis and structural behavior analysis, with the section shape and rdw being variables, the function for lebr is proposed. 6 all the reinforcement in the specimens, longitudinal bar and transverse stirrup, is of grade hrb400

    基於非線性數值分析及結構行為分析結果，研究了荷載效應負載率的影響因素，並確立了該參數以截面形狀和肢厚比為自變量的數學模型，為截面設計創造了條件。
  8. There are many plants that have the character of time - varying, large delay, large inertia in the process of production of modern power station such as the superheated steam temperature, the reheated steam temperature, the water treatment of boiler and the load regulation. some of them have the strong character of nonlinear and some of them are multivariable coupling systems it is very difficult to obtain good effect of control by conventional pid control. it is necessary to set up the mathematics models of controlled plants if applying control means of modern control theory such as self - adaptive control, optimal control ， decoupling control and predictive control. and these control systems have large calculation and bad character of real time in general. these disadvantages make them be not able to meet the need of real production process and limit the application of them in modern power station. now the generator units are developing towards large capacity and high parameters. many new kinds of generating electricity means are coming into being. the characers of production units of power station become more and more complex but the demand to quality of control becomes more and more strict. the new control means are in bad need to control them effectively

    現代電站的生產過程中存在過熱汽溫、再熱汽溫、鍋爐水處理、負荷調節等許多大遲延、大滯后、特性時變的對象，它們中有些還是具有強非線性特性的對象或多變量耦合系統，採用常規的pid控制手段很難取得良好的控制效果。若應用現代控制理論中的自適應控制、最優控制、解耦控制、預測控制等控制手段，則需要建立被控對象的數學模型，而且往往控制系統的計算量大、實時性差。這些缺點使其很難滿足實際生產過程的需要從而極大地限制了其在現代電站中的應用。
  9. In this dissertation, the author builds up mathematical model of electro - hydraulic load simulator system. and it also builds up model of p - q servo - valve and complete system based on bond graph theory, which consider the nonlinear of orifices and real - time changing characteristic of liquid capacity in the cylinder chambers

    論文建立了電液負載模擬器的數學模型，同時，基於鍵圖理論考慮閥口流量非線性和液壓缸液容的時變特性，建立p - q伺服閥和全系統的鍵合圖。
  10. The bivariate poisson models of contingent claim times about the homogeneous portfolios are studied, and an independent condition of the two variables is proved, and then the mixed bivariate poisson models of contingent claim times about the heterogeneous portfolios with dependent risks are studied, and the last, the optimum bms formula about the heterogeneous portfolios with dependent risks are reached

    研究了同質風險相依條件下的二元poisson索賠次數模型，得到了二元poisson索賠次數模型獨立的充分必要條件同時研究了非同質風險相依條件下二元混合poisson索賠次數模型，得到了相應的非同質風險保單組合的索賠次數模型為雙變量負二項分佈的概率函數在此基礎上將保險精算中的最優bms由獨立情形推廣到了風險相依的情形，並得到了相應的最優bms的計算公式。
  11. The approximation of exponential distribution on the sequences of dependent nonnegative continuous random variable

    指數分佈對任意非負連續型隨機變量的逼近
  12. In chapter l, we introduce the relative background on this paper and give some simple expressions of the work which have been studied. in chapter 2, in virtue of the notion of likelihood ratio the limit properties of the sequences of dependent nonnegative continuous random variables are studied, and a class of strong limit theorems represented by inequalities are obtained. the bounds given by these theorems depend on positive constant c. in chapter 3, by means of the notion of log likelihood ratio, a kind random strong deviation theorem are obtained, and the bounds given by these theorems depend on r ( )

    第一章，介紹本論文的選題背景，對已有的工作進行扼要的介紹；第二章，利用似然比的概念研究相依連續型非負隨機變量序列的極限性質，得到一類強偏差定理，其偏差界依賴于正常數c ；第三章，利用對數似然比的概念得到一類隨機偏差定理，其偏差界依賴于r （ ） ，證明中引進了尾概率和尾概率的laplace變換的概念；第四章，利用對數似然比的概念，得到了一類關于任意連續型隨機變量序列的泛函的強偏差定理。
  13. To put into operation a large amount of non - linear load, make in harmony wave of rural power grids serious becoming in pollution, pass to rural local electric wire netting main in harmony analysis of wave source, put forward in order to restrain from insert rural power grids in harmony wave source voltage total in harmony wave distortion rate and the containing rate change last device number pulsating for increase of goal, increase the pulse of the current change device and install light specified value electricity active wave filter mix with passive wave filter near the harmonics source to control the wave in harmony

    摘要大量非線性負荷的投運，使農村電網的諧波污染日趨嚴重，通過對農村地方電網主要諧波源的分析，最終提出了以限制接入農村電網的諧波源的電壓總諧波畸變率和各次諧波電壓含有率為目標的增加換流裝置脈動數，以及在諧波源附近裝設小額定值的電力有源濾波器配以無源濾波器的混合型電力濾波方式，以進行諧波治理。
  14. Several influence factors to result plasma drift in hainan were analyzed. in this paper the characteristics of ionospheric parameters variation were analyzed systematically and some new results in storm - time such as seasonal behaviors were obtained ; it is the first time to investigate the ionospheric drift behavior in hainan and some new results was obtained, the relationships between each two plasma drift velocity components in storm time in hainan were found and the electric filed variation in hainan ionosphere also was obtained ; the results also show that there are big differences of the ionosphere parameters bo and bl obtained from the data with that obtained from the iri - 2001 applied for hainan ; a new phenomena was found during a strong magnetic storm, that a layer with very strong electron density and density grad was found during the recovery phase of the storm, its horizontal scale is beyond 100km and temporal scale is about 2 hours, this phenomena repeated 3 times continuously. a type of negative disturbance in high and low latitude but positive disturbance in east - asia also has been found

    本文較為系統地給出了海南地區電離層的參數變化特徵，特別是得到了一些暴時與以往不同的季節特性；第一次給出了海南地區的電離層等離子體漂移特徵，發現等離子體漂移暴時擾動在三個方向上有內在的聯系，得到了電場變化曲線；研究結果還表明海南電離層的半厚指數和形狀參數等與國際參考電離層iri - 2001存在很大差別；通過對強磁擾動事件期間的參數變化特性分析發現，在磁暴恢復相期間海南地區電離層底部存在一個電子密度非常大的高密度區，高密度區底部電子密度梯度隨高度急劇增加，該區域的水平尺度可達100公里以上時間尺度約為2小時，連續出現過三次，這是一個在海南從來未發現的新現象；研究還發現了暴時東亞地區電離層擾動會出現高低緯負相而中緯正相的現象。
  15. The varieties of interior parameter and exterior load disturbance and the presence of saturation nonlinear have great influence on the dynamic process and tracking effect of the system, so there are practical meanings and theory values to apply robust control methods to speed system. the development and status quo of robust control theory is summarized

    由於系統內部參數的變化、飽和非線性的存在及外界負載擾動的變化對軋機速度系統的動態過程及跟蹤效果有較大的影響，因此，本文應用魯棒控制方法對速度系統進行控制研究，具有較大的實際意義和理論價值。
  16. Why power quality questions are attracting attention increasingly has three chief reasons : the electricity load structure occurs the great change in the modern power system ; very sensitive to power quality control equipment and the electronic installation service based on the computer system of large numbers have been used ; in the power market under the operating mechanism, power is as the commodity, and users certainly puts forward the more and more higher requirement to the commodity quality

    電能質量問題之所以日益受到重視主要有三個原因：現代電力系統中電負荷結構發生了重大變化，諧波源的種類和數量增加；大量對電能質量非常敏感的基於計算機系統的控制設備和電子裝置投入使用；在電力市場運行機制下，電能作為商品，用戶必然對商品質量提出越來越高的要求。
  17. After a few months or even a year, our hormones and brain chemistry begin to change, and our " thinking " brain - - the cerebral cortex - - may notice that our partner is flawed

    結婚數月或年余之後，我們體內的荷爾蒙和大腦中的化學物質開始發生變化，大腦中負責「思維」的大腦皮層開始注意到我們的伴侶並非那麼完美無瑕。
  18. For ac electric arc furnace is an unbalanced, nonlinear and time variant load that produces unbalance, harmonics and interharmonics related with flicker effect. the modeling of all these aspects requires adopting a nonlinear, asymmetrical and dynamic v - i characteristic for the electric arc

    由於交流電弧爐是一種不平衡的、非線性時變負載，它產生與電壓閃變有關的不平衡、諧波和分數諧波，所有這些就需要一種非線性、不對稱的動態u ? i特性的電弧爐模型。
  19. The powerful learning ability and nonlinear reflecting functions of the artificial neural networks can combine the weather factors, typical days and historical load data, but it is not good enough at the embodying continuous variance

    神經網路模型有力的知識學習能力和非線性映射功能，將氣象因素、類型日及歷史負荷數據與負荷變化有機結合起來，但此模型對負荷變化的連續波動性體現不夠。
  20. With the broad application of the electrical and electronic technology in the industry branches and the power apparatuses, the number of non - linear loads is much more and more, and the capacity of them is biggish, so a mass of harmonic is injected into the power system, which produces the waves of voltage and current in power system to be aberrant seriously

    隨著電力電子技術在各工業部門和用電設備上的廣泛應用，非線性負荷數量越來越多，容量也越來越大，諧波大量注入電網，使電力系統電壓、電流波形發生嚴重的畸變。由於大多數儀器、儀表是針對工頻正弦波設計的，因而造成指示數據不正確。
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