dispersion method 中文意思是什麼

dispersion method 解釋
分散法
  • dispersion : n 1 分散，散開；散布，傳播；離散。2 【物理學】彌散，色散；【化學】分散作用；被分散物；分散相，分...
  • method : n 1 方法，方式；順序。2 （思想、言談上的）條理，規律，秩序。3 【生物學】分類法。4 〈M 〉【戲劇】...
  1. The numerical method for the inverse problem of second - dimensional advection - dispersion - reaction equations is discussed in the article

    摘要討論了一類二維對流反應擴散方程反問題的數值解法。
  2. Abstract : propagation characteristics of r wave in a pavement structures are analysed in this paper. based on the propagation characteristics of r wave, the horizontal propagation wave is simulated by using r wave, the vertical propagation wave is also simulated by using body wave in calculating dynamic response of pavement structures. the availability and accuracy of dispersion curves measured by sasw in pavement structures is analysed by using the presented method used to calculate dynamic response

    文摘:利用有限單元法分析了道路結構的r面波傳播特性：在深度方向上衰減較慢，傳播較深，波動性大.提出了在道路結構動力響應計算中，利用面波來模擬水平向傳播波，利用體波來模擬豎直向傳播波.通過算例來驗證該方法的可靠性和精確性，並利用這一動力響應計算方法分析了道路結構表面波測試中所獲彌散曲線的可靠性
  3. In this thesis, in order to reducing the amount of the pt catalyst, improving the electrocatalytic activity of the pt catalysts and utilization ratio of pt, the electrochemical codeposition method by cyclic voltammetry ( cv ) was used to prepare a series pt / moox / glassy carbon ( gc ) composite electrodes with high dispersibility. the composite electrode, pt / moox / gc, was characterized to study its composition and its electro chemical behavior by cv. using the xrd and sem techniques, the size and the dispersion degree of the catalyst particles were studied in presence or absence of moox in the catalyst

    為了降低主催化劑pt的用量、提高pt的活性和利用率，本論文利用循環伏安法共沉積制備高分散的pt moo _ x催化劑顆粒，利用循環伏安電化學表徵、 xrd和sem技術研究了引入moo _ x后的催化劑即pt moo _ x顆粒的粒子大小、分散狀態；利用icp - aes定量分析pt moo _ x催化劑顆粒的組成含量；並藉助于電化學方法分別評價了pt moo _ x gc電極催化劑的對甲醇的電催化活性和穩定性、氧還原電催化活性。
  4. Firstly, second harmonic component ratio and dead angles of two phase inrush ' s dispersion in three - phase transformes are acted as input variable. secondly, the method applies improved algorithm based on the original algorithm of multi - layer forward back propagation network, that is to say, adding last variational effect of weight value and bias value to this time and making use of variable learning rate. at the same time, this method also adopts dynamic form in the number of hidden floor node

    首先，文中將三相變壓器兩相涌流差流的二次諧波含量比和間斷角作為網路的輸入變量；其次，利用對原有bp網路訓練演算法基礎上的改進型演算法（即在計算本次權值和閾值的變化時增加上一次權值和閾值變化的影響以及採用變學習率，與此同時隱含層神經元個數採用動態形式） ，通過樣本訓練使網路結構模型達到最優。
  5. In local vector match method, we add the line numbers and the dispersion of direction angle between the center point and near minutiae point. we also add the direction angle of the center point. these additions enhance veracity of the minutiae feature matching

    在局部向量特徵匹配法中加入了中心點與鄰近特徵點的紋線數，方向角差，中心點的方向角等特徵信息，提高了特徵匹配的準確性。
  6. The dispersion model, with axial dispersion only was used to describe the liquid flow in the downcomer. the model parameters were fitted by the least - squares method. it was found that the curve of dispersion model fitted the experimental rtd curve well

    本文利用一維軸向擴散模型對降液管中液體流動進行了數學描述，用時間域最小二乘法擬合了模型參數，模型方程所作曲線與rtd曲線吻合較好。
  7. However the analysis of both location and dispersion effects in unreplicated factorial experiments with censored data has not been studied widely. hamada and wu ( 1991 ) proposed a iterated method to estimate location effect under the condition of homogeneity of variances

    Hamada和wu （ 1991 ）給出了此條件下鑒別和估計位置效應的迭代演算法，但由於其模型假定各試驗點同方差，因此不能分析散度效應。
  8. 90 % uv below 400nm could be shielded by the nano - sio2 sol. the time of the artificial aging of nano - sio2 - modified coatings prepared by the way of in - situ dispersion method was about twice as long as that of the nano - sio2 - modified coatings prepared by dispersing the nano - sio2 powder in the coating directly. on the other hand, the fadeproof time ( reaching the second level of color aberration ) of the nano - sio2 - modified coatings was 1. 83 times as long as that of the national standard for the super coatings

    實驗證明:納米510 :溶膠具有很強的紫外散射屏蔽性能，對400nm以下的紫外光能屏蔽90 %以上;在位分散法納米510 :改性塗料的耐人工老化粉化時間比直接分散法納米510 :改性塗料提高了近1倍，耐變色時間（達到色差2級的時間）是國標優等品要求的1 . 83倍，較相應的未改性塗料提高了約25 % 。
  9. There was an increase in the fadeproof time of 25 percent over the common coatings. both the nano - tio2 - modified coatings prepared by the way of in - situ sythesising method and the nano - sio2 - modified coatings prepared by the way of in - situ dispersion were strong weatherability coatings, which could resist 18 years " weathering if we calculated the result with the standard which argued that 100h of the artificial aging process was equal

    通過原位生成法制備的納米tio :改性塗料和在位分散法制備的納米510 :改性塗料具有超強的耐候性能，以人工老化100h大約相當于室外曝曬一年計算，納米改性的塗料在室外的使用壽命可超過18年。
  10. Previous researchers have always determined the sp atial distribution patterns ( sdp ) of castanopsis kawakamii with a sample - dis tance method. however, the distribution patterns may be affected by the quadrat si ze and, in the course of analysis, the density differences among the cluster plots are not considered ; therefore, differences of cluster plot size and the dispersi on degree among individuals of cluster plots can not be known. authers of this pa per have determined the spatial distribution patterns of castanopsis kawakamii population in different habitats by means of non - quadrat distance method and a nalysed the pattern intensity and grain of the sdp. the pattern intensity is defi ned with the relative density differences and the pattern grain can embody the d ispersion degree of the individuals in the plots, and the dispersion degree among the plots. the determined results are as follows. the intensities of the species range in order from strong to week : litsea mollifolia p. kawakamii i. purpure a r. cochinchinensis c. kawakamii c. carlessii d. oldphamii s. superba. the gra ins of the species queue in order from coarse to close : s. superba = litsea mollif olia r. cohinchinensis c. kawakamii = i. purpurea c. carlessii p. racemosam d. oldp hamii. these determined results tally basiclly with the results authers of this paper have got in determining the same plots by means of aggregate index access ing method. in view of this, it is held that the sdp of c. kawakamii is closely related to the habitats and biological features

    前人都是採用樣方方法對格氏栲種群數量的空間格局進行測定，而格局分佈有可能受樣方大小的影響，且分析過程中沒有涉及聚塊間密度差的問題，因而無法掌握種群的聚塊大小差別及聚塊內個體間的離散程度.本研究採用無樣方距離法，測定不同生境的格氏栲種群空間格局，分析格氏栲種群格局的強度和紋理.強度以聚塊和間隙的密度差來定義，紋理則是體現聚塊內個體間的離散程度與諸聚塊間的分離程度.測定結果表明，格氏栲種群格局強度從高到低排列次序為：木姜子蚊母樹冬青茜草樹格氏栲米櫧虎皮楠木荷；格局紋理從粗到細的順序是：木荷=木姜子茜草樹格氏栲=冬青米櫧蚊母樹虎皮楠.這一測定結果與作者採用聚集度指標測定相同樣地格氏栲種群空間格局的結果基本相符.因此，格氏栲空間格局類型及分佈與格氏栲生物學特性及生境的關系密切
  11. Pigments and extenders - method of assessment of ease of dispersion - part 34 : test medium alkyd - melamine resin system iii, low viscous, stoving type

    顏料和填充劑.易分散性的評估方法.第34部分:低粘度烘
  12. Optical amplifiers - test methods - polarization mode dispersion parameter - poincare sphere analysis method

    光學放大器.試驗方法.偏振模式分散參數. poincare球面分析方法
  13. Test method for the dispersion stability of vat dye suspensions

    還原染料懸浮液分散穩定性測定法
  14. In this paper, high - order accurate weighted essentially non - oscillatory ( weno ) schemes are investigated and their applications in hyperbolic conservation laws are discussed. based on this, a new weno difference scheme which based on dispersion - relation - preserving relation is developed, and representative test cases with this scheme for computational aeroacoustics ( caa ) problems has been implemented and compared in order to test capability of wave capturing ; in addition, weno schemes generally do not converge at high order in the presence of contact discontinuity of euler equations, so a conservative front tracking technique coupling weno schemes and level set method to simulate the translating density profile is presented here, and numerical simulation with this technique for representative test case has been implemented and results show the desired accuracy

    本文研究了高階精度加權基本無振蕩（ weno ）格式及其在雙曲守恆律方程中的應用，在此基礎上作了兩個方面的工作：一是針對高頻聲波問題構造出一種基於保色散關系（ drp ）的weno有限差分格式，並對計算氣動聲學（ caa ）問題的代表性算例進行了大量數值實驗，比較了該格式捕捉波數的能力；另外，針對高階weno格式在處理euler方程的接觸間斷時精度有所降低的問題，研究了利用界面追蹤技術levelset方法和高階激波捕捉weno格式相結合的一種守恆追蹤方法，並且給出有代表性的密度滑移面問題的算例，得到一致高階精度的數值模擬結果。
  15. The compound modification of silane wet method and stearic acid dry method modification combine the advantage of individual stearic acid modification and silane modification. the indices are listed as following : wetting contact angle 140, penetration time 200 minutes, oil absorption contents 1. 4, dispersion degree17. 5. on the basis of compound modification, silane and stearic acid cooperation modification simplify the modification craft

    試驗研究表明，單一硅烷改性，干法效果優于濕法；硅烷濕法與硬脂酸干法復合改性，結合了硬脂酸、硅烷單獨改性的優勢，改性后的指標分別為：接觸角140度，滲水時間200min ，吸油值31 . 4 ，分散度17 . 5ml ；在復合改性的基礎上，硅烷與硬脂酸復配干法改性，進一步簡化了改性工藝，改性后的指標分別為：接觸角145度，滲水時間220min ，吸油值28 . 2 ，分散度18 . 0ml 。
  16. The equation including the nonlinear dispersion, i. e. the modified nonlinear schrodinger ( mnls ) equation, is a better model. in this thesis, we take mnls solitons as a model for femtosecond soltions. then based on the recently developed direct perturbation theory for perturbed mnls equation, we study the raman self - frequency shift of femtosecond solitons and its suppression by the means of frequency filters. for this purpose, first, we define the physical parameters of mnls solitons ; next, through the direct perturbation theory for perturbed mnls equation, under adiabatic approximation, we obtain the evolving parameters of mnls soliton on our questions and then choose the parameters of frequency filters based on it ; at last, we directly numerically simulated our questions by split - step fourier ( ssf ) method after improving the arithmetic of the differentiation of the nonlinear item for satisfying mnls equation

    本論文以mnls孤子作為光纖飛秒孤子的模型，通過新近建立的mnls孤子直接微擾理論，研究光纖中由拉曼效應引起的飛秒孤子在傳輸中的自頻移，以及通過頻率濾波對自頻移的抑制。為此，首先給出描述mnls孤子的各物理量，然後用mnls孤子直接微擾理論，解析地得到這些問題絕熱近似下的孤子參數演化，並由此選擇頻率濾波的參數，最後用分步傅里葉方法，在對非線性項微商的演算法做出了適合於mnls孤子的改善後，對拉曼效應及頻率濾波進行了直接數值模擬，其中頻率濾波參數用微擾理論確定。
  17. For example, in some applications an edg without input and output waveguides is preferable and it is much easier to fabricate. an edg of flat input / outputs can also maintain a good linear dispersion and a perfect focused field as a conventional edg this paper presents a design method for an edg of flat input / outputs is presented

    而平場輸入輸出的edg在很多應用中可以省去製作輸入輸出波導，大大簡化製作工藝；同時平場輸入輸出的edg能夠保持良好的線性色散和聚集效果。
  18. Detaching the wear region and background, caculating the threshold value is 151, 147, 118 taking overlap method and maximum dispersion method of high - load small particle abrasive wears low - load big particle abrasive wear and adhesive wear, then processing edge detection and skeleton map with classical sobel and gauss - laplace and kirsch arithmetic operators of template matching method, making the shape skeleton produced by different wear mechanism embodied cleared. and analysing the trait of shape skeleton

    然後應用邊緣檢測的經典邊緣檢測運算元sobel運算元、 gauss - laplace運算元和模板匹配法中的kirsch方法對圖像進行邊緣檢測以及輪廓提取，使這三種磨損形式的不同磨損機制所產生的形狀輪廓得到清晰地體現，並結合磨損機制分析形狀輪廓的特點。
  19. Velocity dispersion method

    速度彌散度方法
  20. The common coatings reached first - degree chalking after 1600h of the artificial aging process. the stable nano - sio2 sol was prepared by sol - gel method and the nano - sio2 - modified coatings were prepared by the way of in - situ dispersion method

    用溶膠?凝膠法制備了穩定的納米sio _ 2溶膠，並採用在位分散法制備了納浙江大學碩士學位論文米510 :改性水性丙烯酸酷塗料。
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