近似式 的英文怎麼說

中文拼音 [jìnsìshì]
近似式 英文
a roximate expre ion
  • 近 : Ⅰ形容詞1 （空間或時間距離短） near; close 2 （接近） approaching; approximately; close to 3 （親...
  • 式 : 名詞1 （樣式） type; style 2 （格式） pattern; form 3 （儀式; 典禮） ceremony; ritual 4 （自然科...
  • 近似 : approximate; similar; approach; approximation; roughness; propinquity
  1. Textual research proves it feasible to slice directly on 3 - d models and abnegate stl format file that is usually used in all kinds of rapid prototyping machine, it has a significantly practical value

    經過本文的研究證明了通過對三維cad模型直接進行切片處理，舍棄了stl格式文件這一目前各類激光快速成形機上通用的模型近似處理環節是完全可行的，並具有重要的實用價值。
  2. Optimized association rules are permitted to contain uninstantiated attributes. the optimization procedure is to determine the instantiations such that some measures of the roles are maximized. this paper tries to maximize interest to find more interesting rules. on the other hand, the approach permits the optimized association rule to contain uninstantiated numeric attributes in both the antecedence and the consequence. a naive algorithm of finding such optimized rules can be got by a straightforward extension of the algorithm for only one numeric attribute. unfortunately, that results in a poor performance. a heuristic algorithm that finds the approximate optimal rules is proposed to improve the performance. the experiments with the synthetic data sets show the advantages of interest over confidence on finding interesting rules with two attributes. the experiments with real data set show the approximate linear scalability and good accuracy of the algorithm

    優化關聯規則允許在規則中包含未初始化的屬性.優化過程就是確定對這些屬性進行初始化，使得某些度量最大化.最大化興趣度因子用來發現更加有趣的規則;另一方面，允許優化規則在前提和結果中各包含一個未初始化的數值屬性.對那些處理一個數值屬性的演算法進行直接的擴展，可以得到一個發現這種優化規則的簡單演算法.然而這種方法的性能很差，因此，為了改善性能，提出一種啟發式方法，它發現的是近似最優的規則.在人造數據集上的實驗結果表明，當優化規則包含兩個數值屬性時，優化興趣度因子得到的規則比優化可信度得到的規則更有趣.在真實數據集上的實驗結果表明，該演算法具有近似線性的可擴展性和較好的精度
  3. There are two approaches generally used to arrive at these approximations.

    通常有兩種方法用於獲得近似解析式。
  4. Based on the analysis of mechanism for joint region, the " frame - wall " and " aslope compression stub column " mechanical models and yielding patterns of core zone of the joints are set up. the shear load - carrying formulation for joint core zone is also given in terms of plastic ultimate analysis. and then, the comparisons between the formulas given in this paper and that of chinese design code ( draft ) and nonlinear fem as well are presented

    對節點核心區的抗剪，通過受力機理的分析，建立了鋼「框架剪力墻」加混凝土「斜壓短受力體系及其屈服機制，根據塑性極限分析，給出了節點核心區抗剪承載力計算的迭加公式， 《規程》公式和非線性有限元近似模擬分析結果進行了比較。
  5. There has been many papers to discuss the in - medium quark and gluon condensates in nuclear matter which use the models with su ( 2 ) l su ( 2 ) r sym - metry. now, we make use of the chiral model su ( 3 ) l su ( 3 ) n including the baryon octet to discuss the quark condensate < qq > in strange matter, where q is an up or down quark field. on the one hand, from the experimetal data, it is found that < qq > vac = - ( 225 25mev ) 3, on the other hand, with the hellmann - feynman theorem, quark condensate can be evaluated on the hadronic level. in this paper, we will investigate the quark condensate in strange matter with the chiral symmetry su ( 3 ) l x su ( 3 ) rspontaneous breaking lagrangian to obtain the variation of the quark condensate in the strange matter when the baryon number change. it can be applied to understand the neutron stars when the neutron star are considered to be constructed by the strange matter. because nertron stars are homogeneous and at very low temperature, we will use the mean - field approximation and zero temperature throughout this paper

    鑒于已有大量文獻討論了核物質中的夸克凝聚，本文將討論在奇異物質中的夸克凝聚。而在介質中的夸克凝聚的基本公式可由hellmann - feynman理論導出，所以運用手征對稱自發破缺拉氏量以及平均場近似，我們就可以討論在奇異物質中的夸克凝聚，由所計算的結果表明： （ 1 ）奇異物質中的夸克凝聚隨奇異物質密度的增大而單調減小。 （ 2 ） -凝聚的出現對衰減率有影響。
  6. The experiments show that the performance of our method is similar to the ye - 0. 699 algorithm, which is the best approximate algorithm in polynomial time. but our method can effectively solve the max - bisection problem with a large scale. 2

    數值實驗表明，該方法與ye - 0 . 699近似演算法（現有的求解圖的最大二等分問題的最好的多項式時間近似演算法）得到的解的性能幾乎沒有差異
  7. The main contents are as follows. ( 1 ) filter cloth and the surrounding soil mass are taken as an approximate isotropy in horizontal section, the relationship of stress and strain is studied, the anisotropy is fully considered, the constitutive model of filter cloth reinforcement fly - ash compound is obtained, it is tested with numerous indoor experiments. ( 2 ) the permeable coefficient is introduced into the constitutive relationship of soil mass with relevant seepage theory ( kozeny - carman experience formula ). the test of filter cloth depositing hi the condition of long term seepage flow is done hi the dissertation, the varying regular of permeable coefficient without pressure is presented

    本文首先對國內外的研究現狀作了回顧和總結，然後主要針對土工織物加筋粉煤灰復合體的本構關系和計算理論進行研究，主要內容有： （ 1 ）將土工織物和周圍土體視為一種近似的彈性非線性橫觀各向同性體，研究它的應力應變關系，充分考慮它的各向異性，得到土工織物加筋粉煤灰復合體的本構模型，然後通過大量室內試驗進行分析驗證； （ 2 ）引入有關滲流理論，即柯茲尼-卡爾曼（ kozeny - carman ）經驗公式，將滲透系數引進到土體本構關系中。
  8. In the course of working, ， the plow will make use of the shuttling method so that it can dig alternately either on the left or on the right. compared to the unilateral plow, it can improve the productivity because it can help leave off the soil 、 take from the consumed energy and reduce the empty journey. to meet the requests above, we will use a remote cylinder with both a small cubage and double functions, approximately designing the plow to be columniform and symmetric. after the experiment for a period in the field, we found that the most frayed areas had happened at the places of both plow shank and share and at the same time the base of the remote cylinder had ruptured suddenly

    與單向犁相比，其優點在於：耕地無開、閉壟，地表平整，降低了耕后整地的能量消耗，減少了地頭的空行程，因而大大提高班次生產率。為了滿足犁體梭式作業的要求，我們採用了一隻小容積雙作用的液壓油缸；同時對犁壁曲面的形狀採用了近似圓柱形的對稱設計。但經過一段時間的田間試驗，我們發現：該犁犁胸部分的犁脛和犁鏵上的犁尖在工作中磨損較為嚴重；主犁梁和油缸缸體的連接部分（即油缸底座）突然發生了斷裂，造成整個犁體無法正常工作。
  9. The striking fact about heron's work is his commingling of rigorous mathematics and the approximate procedures and formulas of the egyptians.

    Heron的工作突出之點是他把嚴密的數學同埃及人的近似方法和公式融合在一起。
  10. ( 4 ) on the efficient method for the dynamical core of the new generation multi - scale forecasting model i ) we present a new multi - level sparse approximate inverse preconditnioner for the complicated 3 - d helmholtz equations in the new generation weather forecasting model. as a result, the new sparse approximate inverse preconditioned gcr and gmres algorithms are given and successfully applied in the dynamical core. numerical tests show that the new algorithms perform very efficiently, and can greatly improve the efficiency of numerical model

    對此，本文提出了一種基於逐層門限技術的近似逆矩陣稀疏模式預選方法，並構造了相應的稀疏近似逆預條件子，結合gcr演算法和g州[ r衛s演算法，首次將逐層門限稀疏近似逆預條件子應用於新一代多尺度預報模式動力內核的實際計算，數值實驗表明這里給出的方法可以大大提高數值模式的計算效率。
  11. After coordinate transformation, we can get the approximate confidence region of parameters in virtue of the approximate expression of e

    然後利用坐標變換，藉助e ~ x的近似式，用數值方法求解獲得參數的近似置信域。
  12. Manipulation of the pure time delay in digital control system applying pade approximation

    近似式處理數字控制系統中的純滯后
  13. We find that there are reasonable approximations to all three modes, but the application of all such approximations must be made with caution.

    我們發現，三種模態都有適當的近似式，但應用它們必須謹慎。
  14. For any approximation to be valid it must provide a result that is in some sense close to the solution of the original problem.

    任何有效的近似式必須在某種意義上提供一個接近於原問題解的結果。
  15. A non - driving - force approximation is presented for the description of dynamic response of a spherical porous particle subject to a step change in the surface concentration

    摘要本研究推導用於描述因顆粒表面濃度階梯式改變所導致動態行為之非驅動力近似式。
  16. Just this fact was one of the motivations for the discussion of boundary approximations in chapter 4.

    恰好這個事實是第四章討論的邊界近似式的引伸之一。
  17. These formulas make the approximations for the derivatives at these points in a nonsymmetrical manner.

    這些公式使得這些點子上的導數近似式是非對稱形式。
  18. In terms of accuracy, the present approximation is superior to the previously reported ones

    就準確度而言，本研究所推導之近似式優于其他文獻中所發表之相關公式。
  19. Excellent agreement between the present approximation and the exact solution was found over the entire time domain

    在整個時間范圍內近似式運算結果和準確解均十分吻合。
  20. Intra particle adsorption, diffusion and a first - order reaction occurring within the porous particle are considered in the present formula

    近似式所考慮之現象包括顆粒內之吸附、擴散及一次反應。
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