降算符 的英文怎麼說

中文拼音 [jiàngsuànfú]
降算符 英文
ladder operators
  • 降 : 降動詞1. （投降） surrender; capitulate 2. （降伏） subdue; vanquish; tame
  • 算 : Ⅰ動詞1 （計算數目） calculate; reckon; compute; figure 2 （計算進去） include; count 3 （謀劃;計...
  • 符 : Ⅰ名詞1 （符節） tally （with two halves made of wood bamboo jade metal issued by a ruler to gener...
  1. For this, the paper combines some thoughts such as role, agent, and service. it also proposes the developing framework of a role - based collaborative software with the object - oriented model technology and imitatively realizes the interacting and cooperating process of the members in developing activities. firstly, to overcome the difficulty of members ’ fuzzy realism to roles, this paper organizes supplying and requiring servvice set, bridges the reflecting relationship between roles and services and realizes the clear definition and dynamic transformation of roles through modifying service set and service - role registered table

    為此本文結合角色、 agent 、服務等思想，利用面向對象建模技術提出一種基於角色的協同軟體開發框架，主要工作有:首先針對成員在開發過程中對角色認識模糊的困難，本文為角色組織了供給和需求兩組服務，建立了角色與服務之間的映射關系，通過修改服務集和服務-角色登記表，實現了角色的清晰定義和動態修改，與傳統方法相比，清晰角色有利於成員明確自身所承擔的職責和擁有的權限;同時為簡易成員查找角色的復雜過程，提出一種靈活的角色查找方法，利用角色匹配矩陣和角色推薦演算法，匹配出符合成員要求的一組近似角色，降低了角色查找的難度。
  2. Numeric - symbolic technique is introduced in the procedure of resultant elimination, procedure of number - spobol manipulation is transformed into that of matrix manipulation. because joini variables are treated as symbols and all structure paramcters are treated as real nuxnbers, the complexity of derivation for input - output equaion is reduced. the soluton is verified with a numerical example, its rsults withoot extraneous roots agree with the original equaions

    消元過程中引入了數字-符號方法，將結構參數處理為數值量，將關節變量處理為符號量，將數字、符號推導過程轉化為了矩陣運算過程，由於結構參數以數值量的形式出現在方程推導中，降低了符號推導的難度，符號推導不需要復雜的符號處理軟體的支持。
  3. The adaptation processing includes linear prediction coefficient adaptation and adaptation of quantization step size for residual signals. based on g. 726, we adopt a huffman coder to make use of probability statistic of bit cascade covering n ( n 1 ) samples generated from adpcm, in order to further reduce the bit rate. ng is lossless entropy coding, the speech quality of our improved algorithm should be same as that of g. 726 standard

    我們的研究和改進工作包括:研究最優非均勻自適應量化器，及其自適應演算法;研究波形預測函數，以及函數零點、極點的自適應演算法;基於每n （ n 1 ）個樣本所對應符號的概率統計，對預測殘差量化值再進行huffman編碼，進一步降低比特率。
  4. On the one hand, the widely used design method is to calculate and predict the results of group - well dewatering by single - well well formulas. these formulas neglect the interactive interference, so the results inevitably cannot comply with the practical situation. on the other hand, the hydrogeology parameters, which are indefinite and difficult to measure accurately, are the main factors, which impact the dewatering calculation results

    一方面，降水設計方法不完善，有些工程設計者仍使用單井降水公式來計算和預測群井降水的影響，忽略了群井的干擾作用，顯然與實際情況不符，另一方面，水文地質參數的準確性也是影響計算結果的重要因素。
  5. As the agricultural nfs is the most important factor for water environmental deterioration and lake eutrophication in china, more and more scientists and technologists focus on the control countermeasurc and pollution mechanism of agricultural non - point source ( nfs ). based on the investigation of natural resource and agricultural distribution, the loss rule of nitrogen and phosphorus in the typical land of qiandao lake watershed and distribution rule of the phytoplankton and physico - chemical characteristic in the lake were studied, and the input loading of nitrogen and phosphorus was also calculated by the annagnps model in this thesis. according to the routine monitoring data of the water environment in qiandao lake from 1989 to 2001, the concentrations of toxic substance and heavy metal were under the monitoring limit, but the total nitrogen ( tn ) and total phosphorus ( tp ) were much higher than the criterion for lake and reservoir

    本文調查了千島湖流域的自然資源和農業生產情況，研究了典型坡地降雨徑流中的氮、磷污染物的輸出規律，利用annagnps模型估算流域農業非點源污染物輸入負荷，並在千島湖內設點采樣，對水質理化指標和浮游植物群落進行系統的研究，得出以下結論： 1989 2001年間的水環境常規監測資料統計分析表明，有毒物質和重金屬濃度長期在監測下限內， no _ 2 - n 、 no _ 3 - n 、 nh _ 3 - n年平均濃度均符合類標準，但湖泊水庫特定項目tn和tp濃度分別為超類和類，呈嚴重超標狀況，湖區主要污染因子是將導致富營養化的物質tn和tp 。
  6. In this thesis, abundant statistical data are contained, two methods are employed to give a positive analysis on the elasticity of demand ( eod ) of i & e in china during the period from 1990 to 2001 from the following three aspects : firstly, regression analysis is applied to calculate the average eod of the general i & e. generally speaking, the export is rich in price eod while the import has a poor one. in addition, the absolute value of the sum of these two kinds of elasticity is higher than 1, which accords with marshall - lener condition and proves that devaluation of rmb should be helpful to improve the trade balance. suggestion is further provided such as cutting off producing cost of export, improving technology and implementing strategy of import substitution to improve trade balance

    本文運用豐富的統計數據資料、兩種方法、從三個層次實證分析了1990 - 2001年我國進出口商品的需求彈性：首先，運用回歸分析法計算總體進出口商品的平均彈性，得出我國出口商品總體富有價格彈性，而進口商品總體缺乏價格彈性，進出口需求價格彈性之和的絕對值大於1 ，符合馬歇爾?勒納條件，人民幣貶值有助於改善貿易收支的結論，並提出降低出口商品生產成本、提高生產技術水平、實施進口替代戰略來改善貿易收支；其次，運用彈性定義法逐年計算約100種主要出口商品和約50種主要進口商品的總體需求價格彈性，對其結果進行分析，進一步驗證了前述結論；再次，運用彈性定義法逐年計算農產品、鋼鐵、汽車、醫藥等五大類八種商品的進出口需求價格彈性，根據其不同的分佈狀況，聯系實際經濟情況，提出相應的匯率、價格及產業政策以改善貿易收支。
  7. This can fully consider the effect of the structure of transmission line and the selection of lighting parameter etc. by calculating and analyzing various of factor that affect the lightning tripping probability of 500kv double circuit transmission line, we can draw the conclusions : the result by intersecting method is more accord with the practicality circumstance than by existing standard methods, using unbalance high insulation and reverse sequence of wire can reduce the contemporary outage rate of double circuit line, reducing the footing resistance is one of the most efficiency method to reduce the back stroking rate of double circuit transmission line, the double back stroking rate and the single back stroking rate will fall by three ground wire, when the footing resistance is 10 ohm, the back stroking rate by three ground wire is 83 percent of by two ground wire

    在分析輸電線路繞擊耐雷性能時，對線路的雷電屏蔽問題進行了分析，提出對擊距法進行改進，充分考慮了風速的影響因素，編寫了具有工程實用價值的計算線路繞擊耐雷水平的程序，此方法可以充分考慮線路結構和雷電參數等對繞擊率的影響。通過對影響500kv同桿雙回線路雷擊跳閘率的各種因素進行了計算和分析，得到以下結論：採用相交法的計算結果比定義法更符合實際運行情況。採用不平衡高絕緣方式和導線逆相序排列可以大大降低雙回同時跳閘率。
  8. Steel fiber reduces the size effect of shear resistance of reinforced concrete beams without web reinfocements. the size effect formula is proposed in this paper, it is better agreement with test data. 5

    鋼纖維對鋼筋混凝土無腹筋梁斜截面承載力「尺寸效應」具有降低作用，本文提出了與現行規范相銜接的鋼筋鋼纖維混凝土腹筋梁斜截面承載力「尺寸效應」計算公式，與現有的試驗資料符合良好。
  9. The results show that if n - dbr is neglected, the theoretical calculations are in good agreement with the references. but our results also indicate that n - dbr has very important influences on the properties of vcsels and if it is not considered, there must be some errors. and double oxide - confining regions offer a method of decreasing threshold current and controlling high order modes

    結果表明，當不考慮n - dbr的影響時，我們的理論計算結果與文獻報道相符；但通過計算可知n - dbr對vcsel特性有較大影響，如果不考慮會帶來誤差；同時雙氧化限制層為vcsel器件提供了一種降低閾值，抑制高階橫模的方法。
  10. The hydrodynamic pressure is reduced for 70 % with air cushion isolation

    模型實驗所得氣幕隔震后，動水壓力降低70 ，與計算結果基本符合。
  11. Experiment results prove that this algorithm is a practical and effective method, with which the ideal cross - section curve can be acquired. the result is coincidence to the standard iri ( the international roughness index ) and meets the necessity

    實驗結論：基於陣列信號處理和小波降噪的演算法應用於路面平整度檢測可以得到較理想的斷面曲線，換算國際平整度指標iri與標定較吻合，符合處理要求。
  12. By using some formulae of confluent hyper - geometric function, the results of radial operators on the normalizing radial wave function of a 3 - d isotropic harmonic oscillator are derived, and the ladder operators are given to calculate the matrix elements

    摘要利用合流超幾何函數的遞推關系式得到徑向算符對歸一化徑向函數的作用結果，得出其升降算符通項，便於求解矩陣元。
  13. A method is presented in which raising or lowing operator is used, to obtain the general expression of eigenfunctions of operators of observerbles. this method is much simpler than others

    給出一種利用升或降算符計算力學量算符本徵函數一般表達形式的方法.這種方法比其它方法簡單得多
  14. But conventional step - by - step decoding algorithm requires that every symbol of received word r ( x ) orderly adds to 2m - 1 nonzero elements of gf ( 2 ) to determine whether the weight of the error pattern has been reduced. if the weight of error pattern is reduced, the error location and the corresponding error value are found

    但是標準的step - by - step譯碼演算法將接收碼字中每個符號與伽羅華域gf （ 2 ~ m ）中的2 ~ m - 1個非零元素依次相加，判斷錯誤圖樣的重量是否下降，如果下降則說明找到了錯誤位置和相應的錯誤值。
  15. Then, combined with the mechanism of vacuum preloading and based on the layer method, settlement calculation of vacuum preloading was analyzed. the study shows that the vacuum degree under membrane equivalent load method does not accord with the mechanism of vacuum preloading. based on the layer method, vacuum degree difference method and effective stress method are presented. the results show that the final settlement calculated by the vacuum degree difference method is more close to the observation results

    然後，結合真空預壓的機理，基於分層總和法的思想，對真空預壓沉降計算方法進行研究：指出用現有的膜下真空度等效荷載法進行沉降計算不符合真空預壓機理；提出了符合真空預壓機理的真空度差值法與有效應力法，前者所推算的最終沉降量較接近實測推算結果，後者與實際結果存在一定差距。
  16. On the basis of the feature that the calculated parameter of predicting subsidence in dewatered cohesive soil is adapt to interval analysis theory, the risk assessment model and two risk assessment indexes of satisfying different needs were established by using interval theory

    本文基於粘性土降水沉降量計算參數符合區間分析的特點，採用區間理論建立風險評價模型和滿足不同需要的兩個風險評價指標。
  17. By using the solutions of a new auxiliary elliptic equation, a direct algebraic method is proposed to construct the exact solutions of some nonlinear evolution equations. the main difference between this method and previous auxiliary elliptic equation methods is that the balance order becomes smaller after using the new auxiliary elliptic equation. therefore, the derived algebraic equations are greatly simplified. meanwhile, the obtained new solutions contain more parameters to be chosen. for some special cases, they give the previous known solutions. it is shown that some new exact periodic solutions of some nonlinear evolution equations are explicitly obtained with the aid of symbolic computation

    利用一個新的輔助橢圓方程將求解非線性發展方程精確解的問題轉化為一個代數方程組進行求解，與已有的輔助橢圓方程法的主要不同是，應用這一新的輔助橢圓方程后降低了平衡次數，減少了所得的代數方程組的個數和方程的項數，從而大大地簡化了代數方程組的求解.同時，由於輔助橢圓方程的解中包含了更多的可選參數，從而給出了非線性發展方程的更多形式的解.作為應用，藉助于計算機的符號計算，求得了一些非線性發展方程的新的精確周期解
  18. The effects of multi - grating diffraction result in enhancement of the diffraction efficiency in two - beam interference experiments. with self - pumped phase - conjugate external cavity of ce : batio3 for the cw ti : sapphire laser, the frequency shift of the laser output due to the self - scanning effect was observed, which approve the possibility of the self - scanning tunable method

    同時位相共軛外腔還使得激光閡值由未加位相共軛腔時的4 . 7w下降到加位相共軛腔時的3 . 6w ，利用外腔理論對實驗結果進行了理論分析，理論計算結果和實驗結果基本符合。
  19. In order to overcome the disadvantages of the traditional calculating method, many researchers of geotechnical engineering like to use other calculating methods and analyze the oringinal settlement data to predict the settlement. compared with the traditional calculating method, this method has the advantages of accuracy and convenience

    希望通過分析土體受壓后的變形特性和對沉降的原始數據處理與計算方法上的深入研究，以得出比傳統的方法更加符合實際的地基沉降計算與預測方法。
  20. On one hand, extended path expressions are made simpler and more flexible by introducing wildcard into them, on the other hand, the time complexity of the algorithm is also reduced by putting forward a new kind of automata, namely automata with a stop set

    一方面通過在擴展路徑表達式中引入通配符來降低查詢表達式編寫難度，提高查詢的效率；另一方面提出帶截止集自動機概念，進一步降低了查詢計算的時間復雜度。
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