sufficient and necessary condition 中文意思是什麼

sufficient and necessary condition 解釋
充要條件
  • sufficient : adj. 1. 充分的，足夠的。2. 〈古語〉有能力的，能勝任的，夠資格的。n. 〈主、卑〉足夠（的量）。 Have you had sufficient？ 你（吃）夠了嗎？adv. -ly
  • and : n. 1. 附加條件。2. 〈常 pl. 〉附加細節。
  • necessary : adj 必要的 不可缺的；必須的 強迫的；必然的 必定的。 a necessary result 必然的結果。 a necessary e...
  • condition : n 1 狀態，狀況，情形；品質。2 〈pl 〉外界狀況，周圍情形。3 地位，身分。4 條件；【語法】條件子句。...
  1. The importance of collision course in guidance of homing missiles is elaborated, that is, the sufficient and necessary condition for a successful interception is the missile and target in the collision course

    闡述了碰撞過程在尋的制導中的重要意義，即實現攔截的充分必要條件是導彈與目標處于碰撞過程上。
  2. Chapter 2 on the locally ( weakly ) uniform rotundity of musielak - orlicz sequence spaces : rotundity is important property in the geometry of banach space. in this paper, criterion that musielak - orlicz sequence spaces equipped with the orlicz norm and luxemburg norm is locally ( weakly ) uniformly rotund was discussed in detail. moreover, we get the sufficient and necessary condition of them

    第二章musielak - orlicz序列空間的局部（弱）一致凸：凸性是banach空間幾何理論的重要性質，本文詳細討論了賦orlicz范數和luxemburg范數的musielak - orlicz序列空間及它們的子空間的局部（弱）一致凸，並給出了它們的充分必要條件
  3. This thesis is divided into two parts. in the first chapter, the existence of markov chains in random environments is described, and their properties are studied. the concepts of recurrence, transience, - irriducibility and strongly - irriducibility are introduced. the sufficient and necessary condition for recurrence of strongly - irriducible markov chains in random environments is obtained, then some sufficient conditions for recurrence and transiece of markov chains in random environments are given. in the second chapter, some results on the existence of invariant measure of bichains ( xn, tn ) are outlined

    全文共分兩章，在第一章中，簡述了隨機環境中馬氏鏈的存在性及其一些性質，介紹了常返性，瞬時性， -不可約，強-不可約等概念，並且得到了具有強-不可約性鏈常返性判定的充分必要條件，以及在一般情形下鏈（
  4. A sufficient and necessary condition for determining singularity of a block circulant matrix over a quaternion division algebra over a field is given, and two algorithms for the inverse of a nonsingular block circulant matrix over the quaternion division algebra are presented

    ?給出了域上的塊循環矩陣可逆性的充要條件及其逆矩陣的演算法。 ?給出了四元素可除代數上的塊循環矩陣可逆性的充要條件及其逆矩陣的兩種演算法。
  5. A sufficient and necessary condition for metrization of a de morgan algebra of uniformity

    德摩根一致代數可度量化的一個充要條件
  6. With the development of the network and the multi - processor system, the research, simulation and the impemeni of the system - level fault diagnosis which is the very important means to increase the reliability of the system, are becoming more and more important. on the system - leve1 fault diagnosis, based on the group theory of system - level fault diagnosis that has been put forward by pro f zhang, the paper constructs newly the theory bases, improves on the matrix method, reinforces and consummates group arithmetic of all kinds of test mode, for the first time, analyses and discusses the equation solution of all kinds of models, so al1 the consistent fault patterns ( cfp ) could be found, straightly and high efficiently, even if the sufficient and necessary condition of t - diagnosable is dissatisfied and the complexity of system - level fault diagnosis is greatly decreased, especialy in strong t - diagnosabl6 system. last the simulation system ' s function has been extended and the application hotspot and the development trend have been disscussed

    本人在張大方教授等人提出的基於集團的系統級故障診斷的理論基礎上，重新構建了系統級故障診斷的理論基礎，定義了系統級故障診斷測試模型的三值表示；改進了系統級故障診斷的矩陣方法，重新定義了測試矩陣、鄰接矩陣、結點對、結點對的相連運算、極大準集團和斜加矩陣，由此能直觀、簡便地生成集團和極大獨立點集；補充和完善了各類測試模型的系統級故障診斷的集團演算法，通過定義集團測試邊和絕對故障集，簡化了集團診斷圖，由此能較易地找到所有的相容故障模式，即使不滿足t -可診斷性，大大減少了系統級故障診斷的復雜度，尤其是對強t -可診斷系統；首次分析探討了各類測試模型的方程解決，由此從另一角度能系統地、高效率地求出所有的相容故障模式（ cfp ） ：擴充了系統級故障診斷模擬系統的功能，快速、直觀和隨機地模擬實驗運行環境，進行清晰和正確的診斷，同時提供大量的實驗數據用於理論研究，優化演算法和設計。
  7. In terms of information an new interpretation for the distillation of entanglement and the distinguishability of orthogonal states is given. using a special protocol we give a sufficient and necessary condition for the local distinguishability of states, and gain the maximal yield of the distillable entanglement

    這個關系式揭示了系統的不確定性與系統的非局域性之間的關系（我們相信系統的不確定性與系統的非局域性之間的關系研究將成為量子信息的一個有意義的方向） 。
  8. With the generalized algebraic riccati inequality ( gari ) approach, a sufficient and necessary condition for the existence of dynamic output feedback h controllers is presented, such that the resulting closed - loop sy stem is admissible with its transfer function satisfying h norm constraint

    利用廣義代數riccati不等式，給出離散廣義系統存在正常動態輸出反饋h控制器，使得閉環系統是容許的且其從外界干擾輸入到受控輸出的傳遞函數矩陣具有h范數約束的充分必要條件。
  9. This paper present a sufficient and necessary condition of constructing quintic ph curves and analyze the geometric meaning of the control polygon

    本文給出了構成五次ph曲線的充要條件，分析了其控制多邊形的幾何意義。
  10. In the end, when the domain is finite, b is a meet - irreducible element or 6 has an irredundant finite meet - decomposition, a sufficient and necessary condition that the solution set is nonempty is given and the number of distinct minimal solutions is formulated

    最後，當論域為有限集， b為交既約元或有不可約有限交分解時，給出了方程inf _ （ i j ） （ a _ j ， x _ j ） = b解集非空的充要條件以及極大元的個數公式。
  11. The heuristic analysis, some concepts and theorems of constrained optimization are employed, e. g., linear feasible direction ( lfd ), and then the proof is first provided for the uniqueness, i. e., maximum nongaussianity is the sufficient and necessary condition to independent source recovery. moreover, based on the conclusion of the uniqueness of maximum nongaussianity, the paper also proposes an alternative but straightforward approach to the proof for the well known “ one - bit - matching ” conjecture presented in multi - unit approaches

    和基於啟發性分析等傳統方法和結論比較，文中引入了線性化可行方向（ linearfeasibledirection ， lfd ）等約束優化概念和理論，首次給出了基於峭度的最大非高斯估計的唯一性證明，指出最大非高斯估計是獨立源提取的充分和必要條件。
  12. The result shows that the sufficient and necessary condition of the quadratic rational b - spline curve ' s curvature monotony is similar to the quadratic rational bezier curves ", but its condition is some different from the quadratic rational bezier curves " curve ' s rendering algorithm is an important content in computer graphics, cad

    曲線的生成演算法是計算機圖形學的重要內容。對於一些基本曲線，如直線，圓，橢圓等，都有快速生成演算法，如畫直線的bresenham演算法， dda演算法，畫圓的bresenham演算法，中點法，正負法， pitterway的橢圓及拋物線繪制演算法等等。
  13. In the fourth chapter, the method of assembly feasibility analysis for shaft and hole feature was established. first, conformance analysis technique was build. as for lmc and mmc of rfs principle, sufficient and necessary condition was given

    首先建立圓柱要素的相符性分析技術，基於漂移帶的尺寸公差語義，結合當前國標，對于lmc條件以及採用獨立原則的mmc條件，給出相符性驗證的充要條件；對于採用獨立原則與最大實體原則的mmc條件，給出相符性驗證的充分條件。
  14. A important result is the one - orde r expression of ar ( p ) yt = dyt - 1 + e, from paralleling a high - order differential equation transformation into a one - order differential equation system, the one - order expression exposes that the ar ( p ) is only a certain more - multivariable power series process and, if a process is described as an ar ( p ), the sufficient and necessary condition is the spectrum norm a of the coefficient matrix d less than one. simplification of ar ( p ) not only brings about orthogonal f ( h ) but also provides global foretelling formula

    作者用高階微分方程化一階微分方程組的方法，獲得多元弱平穩序列p階自回歸模型的一步滑動平均表達式，證明了ar （ p ）的是一個更高維的冪級數的線性過程，從而，說明了ar （ p ）關于序列依概率成立的充要條件是：該模型更高維的冪級數的線性過程的表達式中系數矩陣d的譜范數1 。
  15. The sufficient and necessary condition for the existence and attractivity of periodic solution of autonomic system with impulse

    脈沖自治系統周期解存在及吸引的充要條件
  16. Solutions presented in this thesis can be summarized as follows : - a sufficient and necessary condition is given for the negacyclic codes whose binary images under the gray map being cyclic, and the binary images are determined when the condition is satisfied

    本文的主要結果為： 1給出了判定一個四元負循環碼的二元像是否是循環碼的充分必要條件，並在條件成立時，給出了其二元像的結構； 2
  17. In this paper, we present the sufficient and necessary condition for the sum of a identity matrix and a generalized cyclic matrix is nonsingular, and obtain the formal representation of the relative gain array of the sum matrix

    本文給出了單位矩陣與廣義循環矩陣的和矩陣的非奇異的充要條件，得到了這樣和矩陣的相對增益陣列的顯示表達式。
  18. From 1990 ' s, sapidis and others had some studies on quadratic bezier curve ' s curvature monotony and they get this curve ' s sufficient and necessary condition of curvature monotony, but the condition is some strict. in 1998, minerur and some researchers brought forward a high degree curve ' s sufficient condition of curvature monotony. in 2000, wang w. l

    從90年代起， sapidis等人對二次b zier曲線的曲率單調性問題進行了研究，得到了曲率單調的充要條件，其條件比較苛刻； 1998年minerur等人提出了一種高次曲線曲率單調的充分條件； 2000年王玉林等人對二次有理b zier曲線曲率單調進行了研究，得到了充要條件。
  19. It is given that a simplistic proof for the solvability of total least squares problem, extending this idea for general total least squares problem, establishes a sufficient and necessary condition for solvability, proves the uniqueness of the amendment matrix and gives it s expression

    給出了完全最小二乘問題可解性的一個簡潔證明，並將這一證明思想推廣到廣義完全最小二乘問題上，建立了它的可解性理論，內容包括廣義完全最小二乘問題可解的充分必要條件和校正矩陣的唯一性及其表達式。
  20. In the late 30 or 40 years, many scholars have a lot of studies on a seemingly unrelated regression ( sdr ) system with two linear regression models, and some important results are obtained : zellner ( 1962 ) put forward two - stage estimator ( tse ) ; based on zellner " s, lin chun - shi ( 1984 ) obtained the sufficient and necessary condition of two - stage estimator ; chen chang - hua ( 1986 ) discussed the tse and its optimalities without any condition for designed - matrix x ; ulteriorly, wang song - gui and van li - qing ( 1997 ) obtained an iteration sequence of estimator by using the covariance - improved approach ; liu jin - shan ( 1994 ), li wen and lin ju - gan ( 1997 ) generalized the covariance - improved estimator respectively

    半相依回歸系統是由兩個誤差項相關的線性回歸方程組成的系統。近三、四十年來，已有很多的學者對這類半相依回歸系統進行了大量的研究，作出了十分重要的成果： zellner （ 1962 ）提出了所謂兩步估計法；在其基礎上，林春士（ 1984 ）得出了兩步估計的充要條件，陳昌華（ 1986 ）討論了對設計矩陣不作任何要求的兩步估計及其優良性；進一步地，王松貴、嚴利清（ 1997 ）利用協方差改進法獲得了參數的一個迭代估計序列，劉金山（ 1994 ） ，李文、林舉干（ 1997 ）則分別對協方差改進估計進行了推廣。
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