partial difference 中文意思是什麼

partial difference 解釋
偏差
  • partial : adj 1 一部分的，局部的，不完全的。2 不公平的；偏袒的。3 偏愛的，特別歡喜的 （to）。4 【植物；植物...
  • difference : n. 1. 差異，差別。2. 不和，爭論。3. 【數學】差，差額。4. 【邏輯學】特殊性。vt. 〈罕用語〉區別，使有差別。
  1. This difference is often accompanied with the partial or complete abortion of the reproductive organs.

    這種差異往往伴隨著生殖器官一部分或全部的退化。
  2. Based on a duralumin flexible beam with piezoelectric films attached, distributed parameter modal described by partial difference equations is builded, and then turned into a set of two order systems with the method of modal analyse. state feedback control and independent modal control is investigated. and simulation of the closed - loop system with thest two methods is performed in matlab

    並用模態分析的方法，將系統的偏微分方程模型轉化成了模態模型；研究了狀態反饋和獨立模態方法；進一步完善了軟體界面以及軟體功能；在實際系統中，應用狀態反饋演算法，有效抑制了懸臂梁在受到外界瞬時脈沖擾動和激振引起的一階、二階模態振動。
  3. The limit theory of law of the iterated logarithm have received more and more attentions, especially about identical independent random variables. but up to now, the studies are only for partial sums and, have n ' t shown any concern on the special finite partial weight suras. however, the partial sums and partial weight sums not only have the osculating aspects, but also have essential difference between them. so the studies for these play an important role in theoretical and applied setups

    因此對重對數律的研究引起了國內外學者的興趣，對獨立同分佈的隨機變量，許多學者做了大量的研究工作，但迄今為止這方面的研究仍限於部分和數列的重對數律，很少涉及到特殊加權和的領域，而部分和與加權和之間既有密切聯系，又有本質不同，因此，這一問題的研究具有一定理論意義和應用價值。
  4. Under special conditions such as low partial load / deep vacuum, unexpected high air leakage resulting in a major temperature difference ( above 10 c ) between the steam exhaust turbine temperature and all air - take off temperature measurement, the suction capacity can be improved by using 2 main ejector simultaneously

    在特殊條件如局部低載荷/極端真空，不正常的熱交換，意想不到的高空氣泄漏導致的在蒸汽排氣溫度和抽空溫度測量上產生的嚴重溫差（ 10 c以上） ，用兩臺主抽汽器同時工作可以提高抽氣量。
  5. The percentage of polymorphic sites, degree of genetic polymorphism and genetic distance were compared and the phylogenetic tree was constructed by neighbor - joining method. the partial mitochondrial 16s rrna gene was amplified by polymerase chain reaction ( pcr ) and the pcr products were directly sequenced after purified. these sequences, together with the homologous sequences of another trichiuridae species lepidopus caudatus obtained from genbank were used to analyze nucleotide difference and to establish a upgma phylogenetic tree by means of biological informatics

    汝us價ay1830 ）各12個個體進行rapd分析，對比多態位點比例、遺傳多態度以及遺傳距離，並構建neighbor - join噸系統樹;通過pcr擴增出線粒體165rrna基因，純化后直接測序，利用生物信息學方法進行序列分析和核昔酸變異比較，結合ge紅bar止中大西洋叉尾帶魚（ lepid （護腳caud玫tuseuphrasen1788 ）同源序列構建u甲cm叭系統樹。
  6. A class of implicit difference schemes with hich accuracy and absolute stability for solving parabolic partial differential equation

    拋物型方程的一族高精度恆穩定的隱式差分格式
  7. Positive solution of neutral partial difference equations

    中立型偏差分方程的正解
  8. On the basis of the theory about water potential in soils, a partial differential equation of water movement in unsaturated soils is derived, which chose volumetric water content as the control variable. the numerical solution of the equation using finite difference method is discussed in this paper, and the modality to calculate water movement in slope considering rain infiltration

    基於非飽和土的土水勢理論，本文推導了以體積含水率為因變量的二維非飽和土的水分運動方程，並給出了用有限差分法來求解此偏微分方程的方法，得到了考慮降雨入滲影響的土坡水分運動的計算程式。
  9. The equation ' s forms of the hydraulic system models with elastic hammer have great difference from power system models that hydraulic system models have partial - differential equations while the power system models all are constant - coefficient differential equations

    計及彈性水擊后，水力系統模型和電力系統模型的形式有很大的差異，水力系統模型含有偏微分方程組，而電力系統模型為常微分方程組。
  10. The exhaust system and muffler are simplified as a set of 1 - d pipes with non - isentropic flow and with variable sections. the partial differential equations of non - stationary flow are transferred into the stationary differential equations by means of the characteristic lines. these equations are solved by finite difference method

    在排氣管系的計算中將排氣管簡化為一組一維非等熵變截面管，並通過「特徵線法」將描述其運動的非定常流的偏微分方程轉化為常微分方程，再用差分數值方法依靠計算機求解。
  11. Using our results, the boundedness of some partial differential equations and some partial difference equations are studied

    利用所得結果研究了某些偏微分方程及偏差分方程解的有界性。
  12. Hence this method can improve accuracy and efficiency of the calculation. c. based on these work upwards, an adaptively wavelet precise time - invariant integration method was proposed in this paper. in this method, an adaptive multilevel interpolation wavelet collocation method for partial difference equations ( pdes ) was conducted, in which the time complexity is less than oleg v ' s method, and then the adaptive precise integration method was combined with, so that in this method the adaptively discretes both in time domain and physical domain were realized

    該方法將外推法引入求解結構動力方程的精細時程積分法中，從而使該方法在求解非線性動力方程中可以自適應選取時間步長；需要指出的是，由於考慮了矩陣指數精細演算法和外推法演算法在時間離散方法上的一致性，在外推過程中，計算工作量基本沒有增加；因此，兩種方法的結合有效提高了演算法的效率和精度。
  13. Differential method for linear partial difference equation with constant coefficients

    常系數線性偏差分方程的微分解法
  14. The present paper deals with the sufficient and necessary condition of the final positive solutions of non - linear partial - difference equations and first presents the comparison theorem

    摘要建立關于具有連續變量非線性偏差分方程存在最終正解的充要條件。
  15. Oscillation criteria of partial difference equationswith continuous variables

    具有連續變量的偏差分方程的振動準則
  16. Oscillation of nonlinear partial difference equations with continuous variables

    具有連續變量的非線性偏差分方程的振動性
  17. By means of the comparison theorem, and the oscillation of some non - linear partial difference equations is discussed and some concise conditions and authenticity are given

    給出系統振動的比較定量，利用比較定理討論了一類非線性偏差分方程的振動性，給出簡單的判別條件及證明。
  18. The aim of this study is to develop a wavelet stochastic finite element method to be applied in solving partial difference equations. this work includes 5 sections as follows : a. the properties of quasi shannon wavelet was studied in this paper, and a wavelet collocation method for partial differential equations was conducted

    該工作主要由以下五部分構成：第一、研究了擬shannon小波的性質，構造了求解偏微分方程的擬shannon小波配置法，同時將外推法引入小波配置法，進一步改善了該方法的計算效率和計算精度。
  19. Some oscillation criteria for a class of nonlinear partial difference equations with variable coefficients are obtained. some linearized oscillation theorems for these equations are established

    摘要獲得了具有變系數的時滯偏差分方程的振動性準則，建立了幾個線性化振動性定理。
  20. In this paper, an asymptotic method have been studied to solve the nonlinear partial difference. the content of nonlinear theory has been enriched. some methods, which are used to solve strongly nonlinear equation, have been expanded

    本文主要是對求非線性偏微分方程的漸近解進行研究，進一步豐富了非線性理論的內容，拓寬了求解強非線性問題的一些方法的應用范圍。
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