稀疏作用 的英文怎麼說

中文拼音 [xīshūzuòyòng]
稀疏作用 英文
rarefaction
  • 稀 : Ⅰ形容詞1 （事物出現得少） rare; scarce; uncommon 2 （事物之間距離遠; 空隙大） sparse; scattered 3...
  • 疏 : Ⅰ動詞1 （疏通） dredge （a river etc ）2 （疏忽） neglect 3 （分散; 使從密變稀） disperse; scatte...
  • 用 : Ⅰ動詞1 （使用） use; employ; apply 2 （多用於否定: 需要） need 3 （敬辭: 吃; 喝） eat; drink Ⅱ名...
  • 稀疏 : few and scattered; few and far between; thin; sparse
  1. The cause that it produces is to there exist a thin layer in the surface that liquid and the gas contact, to be called a surface layer, molecule inside the surface layer is more sparse than the inside of liquid, molecule room distance is a few bigger than the inside of liquid, molecule room coactions shows for the gravitation

    它產生的原因是液體跟氣體接觸的表面存在一個薄層，叫做表面層，表面層里的分子比液體內部稀疏，分子間的距離比液體內部大一些，分子間的相互作用表現為引力。
  2. On the basis of forefathers " study, the interaction of the shock waves of torrent, and that of rarefaction to shock wave have been discussed in detail in the useof the concept of the ( u, h ) curve

    在前人研究的基礎上，通過引入（ u ， h ）曲線的概念，分別對急流沖擊波的相互作用，稀疏波與沖擊波的相互作用進行了比較詳細地討論。
  3. The control - equations were solved with upwind tvd algorithm and elemental chemical reaction model, with the point - implicit used to overcome the numerical stiffness of chemical reaction source term

    數值結果顯示，當爆轟波平掠過惰性氣體界面時，形成了爆轟波、界面、透射激波以及稀疏波相互作用的現象。
  4. The results show that, when detonation sweeps a contact surface of inert gas, interactions of detonation, transmit shock and contact surface take place ; in condition of high n2 dilution proportion, detonation is decoupled by rarefaction waves

    在高n2比例稀釋的可燃混合氣體情況下，當爆轟波平掠過特定惰性氣體界面時，它與惰性氣體界面相互作用產生的稀疏波可以導致爆轟波的解耦。
  5. The intersection design is very important. but in the vertical design, the designer could n ' t use the form of contour lines to express accurately his design intension. he could only write few elevations of the pavement board corners because of the complexity in design progress and the bother in calculation

    平交口立面設計，由於其設計過程復雜和計算麻煩，設計者很難以等高線等形式來準確地表達設計意圖，只能是稀疏地手工計算標注若干高程式控制制點，設計成果對施工的指導及約束作用遠不能滿足要求。
  6. He began to pull himself together, straightening up his bent figure and passing his hand, as was his wont, over his scant gray hair, of which a few locks strayed behind his ears

    他的精神恢復正常了，駝著的背挺直了，用習慣的動作，把一隻手放在白發上捋了捋，那稀疏的幾綹鬈發在他的耳後飄拂著。
  7. It adopts the hierachical clustering in vocabulary vsm model because of its special function, on the other hand enriches the subcategory tagging information by rules, it can decrease me data sparse problem, and introduces the confidence intervals into the model for the selection of priority between statistics and rules

    另外還對標注模型從兩方面作了優化，由於詞匯特徵向量的特殊作用，本文對特徵詞匯採用層次聚類來提高其分類精度；另一方面，引入規則來進一步豐富細分類標注信息，減少數據稀疏等問題，並且引入置信度來選擇統計與規則的優先關系。
  8. In the situation of shock wave, the interaction caused by the situation of one shock wave catching up with another is qualitatively analyzed with the result of the wave form : reflection rarefaction and incidence shock wave

    對急流沖擊波的情況，從定性的角度分析了一個沖擊波追趕上另一個沖擊波后的相互作用，得到可能產生的波形，即反射的稀疏波和入射的沖擊波。
  9. In the situation of the rarefaction chasing after the shock wave, both the analysis solve and the important relation as to the characteristics of the wave form are obtained in the use of the characteristic line method before the rarefaction catching ip with the shock wave ; after thai, qualitatively, two kinds of wave forms, reflection shock wave and incidence shock wave, or reflection shock wave and incidence rarefaction, may be obtained as well as the corresponding conditions for their occurrence

    對稀疏波追趕沖擊波的情況，在稀疏波趕上沖擊波以前，利用特徵線方法，得到了此問題的解析解及有關波形特性的重要關系；在稀疏波趕上沖擊波以後，不僅定性地得到二者經過相互作用以後，可能產生的兩種不同波形，即反射的沖擊波和入射的沖擊波或者反射的沖擊波和入射的稀疏波，而且給出了產生不同波形所對應的條件。
  10. Compared with the initial value problem, the weak entropy solution of the initial - boundary value problem includes the following new interaction type : a central rarefaction wave collides with the boundary and the boundary reflects a new shock wave which is tangent to the boundary

    與初始值問題相比較，初邊值問題的弱熵解包含了以下新的相互作用類型：中心稀疏波與邊界相撞，邊界反射出一個與之相切的新激波。
  11. Sad is able to differentiate models in form of subroutines, fully exploit the sparsity of the models and need few additional operations. it is concluded that sad is very suitable for the process models that have relatively simple computational structure and consist mainly of polynomials

    符號自動微分具有可對子程序形式的函數求導、可以充分利用模型的稀疏性、無需輔助操作的優點，非常適合針對結構相對簡單、計算式以多項式為主的過程系統模型求導。
  12. If the inviscid solution includes the interaction that a central rarefaction wave collides with the boundary and the boundary reflects a new shock wave which is tangent to the boundary, or the inviscid solution includes some shock wave which is tangent to the boundary, then the error of the viscosity solution to the inviscid solution is bounded by o in l1 - norm ; otherwise, as in the initial value problem, the error bound is o

    如果無粘解包含中心稀疏波與邊界相撞且邊界反射一個與之相切的新激波這樣的相互作用，或者無粘解包含與邊界相切的激波，那麼在l ~ 1 -范數下粘性解與無粘解間的誤差界是o （ ~ （ 1 / 2 ） + | ln | + ） ；否則，類似於初始值問題，誤差界是o （ | ln | + ） 。
  13. In this paper, we consider the optimal parameter vector a of the modified incomplete gauss _ seidel method ( migs ). we prove that the spectral radius function of the iterative matrix t of migs with parameter vector is strictly monotonic decreasing with respect to a satisfying 0 e if the classical gauss _ seidel method converges for a z _ matrix. some properties of the left and right eigenvectors corresponding to the largest eigenvalue in modulus are given, too. these results are useful to find an optimal parameter for migs

    目前主要的方法有兩類：一是充分利用所給矩陣a的特點，採用適當的主元素選取策略，使分解出的因子盡可能地保持稀疏性；二是迭代法。對于第二種方法，迭代矩陣的選取具有決定作用。只有選取的迭代矩陣的譜半徑小於1才能保證迭代法收斂。
  14. The still further analysis in connection with several actual examples reveals that the method can fairly accurately identify the numbers, sizes and action positions of the passing vehicles on the bridge in the state of sparse traffic volume, and can derive load under multiple vehicle action within the influential lines

    結合實例的分析表明該方法能夠較精確識別稀疏交通狀態下車輛數量、大小、作用位置，並能推求影響線內多車作用下的荷載。
  15. Part two introduces some known preliminary results which will be used frequently in the following text. after smoothing the solution to the rarefaction wave, we further give some decay estimates which plays an important role in the following estimate

    第二部分主要介紹了本文所需要的一些已知結果，在對稀疏波進行光滑化處理后，進一步給出了關于光滑稀疏波的一些衰減估計，這些衰減估計在後面的估計中起著重要的作用。
  16. In this thesis, we mainly use snmf ( sparse nonnegative matrix factorization ) as the method of rank reduction, which extend the nmf to include the option to control sparseness explicitly

    本文主要採用snmf （非負稀疏矩陣分解）演算法作為降維和提取特徵向量的工具，該演算法是在nmf演算法的基礎上加上顯式地稀疏因子控制而形成的一種非負矩陣分解方法。
  17. This paper studies the least redundant solutions of two - dimensional array system by using the simulated annealing algorithm. two ideal thinning solutions for the two - dimensional circle array were discussed intensively in this paper. one solution uses half - circle configuration with very much reduced number of elements and taking an image by rotating the array ; the other selects element positions around the full circle to provide a roughly uniform coverage in the spatial frequency domain

    在一維天線陣設計的基礎上，本文利用模擬退火演算法給出了兩種最小冗餘二維圓環天線陣的結構設計方案，一種方案利用天線旋轉，在半圓周內稀疏天線；另一種方案通過將空間頻率采樣點的均勻分佈作為優化的約束條件，在全圓周上使天線單元分佈達到最優。
  18. It is a new truly mesh - less method, because the background cells for integration are not needed. it uses the weighted function of gaussian or of spline as a test function of the weighted residual method

    這種方法採用高斯權函數或樣條函數作為加權函數；同時這種方法只包含中心在所考慮點處的規則局部區域上以及局部邊界上的積分；所得系數矩陣是一個帶狀稀疏矩陣。
  19. In addition, quantitative research is made for the reflection wave and the incidence shock wave resulting from the interaction. the relationship of some quantitative factors like wave height and speed together with the computing method are the achievements of the research

    另外對于稀疏波與沖擊波相互作用以後產生一道反射的沖擊波和一道入射的沖擊波這種情況，給予了定量地研究，得到了波高、波速等一些定量之間的關系和計算方法。
  20. Based on work of w. clem karl etc., the quasi - newton iteration method for solving the optimization problem of sar imaging is derived, the sparse projection matrix tsof sar imaging is constructed, by replacing the original sar imaging projection matrix t with ts, the computation efficiency of peak - enhanced sar imaging is improved greatly

    在w . clemkarl等工作的基礎上，導出了求解峰值特徵增強sar成像優化問題的準牛頓迭代方法，建立了sar成像稀疏投影矩陣t _ s ，通過用t _ s代替原始sar成像投影矩陣了，有效提高了峰值特徵增強sar成像方法的計算效率。
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