singular surface 中文意思是什麼
singular surface
解釋
奇曲面-
Due to the importance of the accuracy of the time - domain impedance matrix elements, the techniques by which treating of the singular integrals and near singular integrals arose from the tdie - mom solving process are analyzed in detail, and these techniques are utilized to solve the tdie. in the end, using triangle patches discretizing arbitrarily 3 - d dielectric objects and metal - nonmetal composite objects surface and utilizing spatial rwg and temporal triangular bases, the tdie are solved by mot algorithm
最後，分別對三維介質目標、金屬非金屬組合目標散射體表面用三角貼片離散，並在空間上採用rwg基函數，在時間上採用三角型時間基函數、利用阻抗元素的精確演算法計算出阻抗矩陣，再運用mot法分別求解了介質體目標，金屬非金屬組合目標的時域積分方程，並分析了金屬非金屬組合目標分界面上的等效電流與等效磁流的特性。 -
The evapration of water area is calculated by et0 multiplied by kc ; and then the evapotranspiration estimation models for other categories ( singular underling surface ) are presented ; based on bare soil and dense grass models the evapotranspiration estimation models for partly grass covered surface is presented combined with vegetation fraction data. it is feasible and logical each categories using singular way and mean, the result of regional evapotranspiration over south ningxia is given
將水體單獨處理，由參考作物蒸散乘以比例系數直接計算得出水體蒸發；建立了4種單一類型下墊面（裸地區、草地完全覆蓋區、喬木林區、灌叢區）蒸散計算模型；對混合下墊面（草地?裸地區）區域蒸發（散）計算方法使用裸土和草地完全覆蓋蒸發（散）計算模型，然後結合植被覆蓋度給出。 -
The singular craft has suffered to skim the surface at the water in this direction for more than an hour.
平底船就這樣在水面上滑行了一個多小時。 -
In this dissertation, the numerical computation for the acoustic radiation problem ( arp ) is studied deeply and systematically in the theory, method and the application technique, based on analyzing the situation of the home and abroad on the numerical computation for the acoustic radiation problem. the calculation formulas of the boundary element method ( bem ) for the exterior acoustic radiation problem in the full - space and half - space are deduced, based on the wave propagation theorem ; the arising of the non - unique solutions, which is associated with the application of the boundary integral equation ( bie ) in acoustic radiation problem, is analyzed and proofed ; the improved combined helmholtz integral equation formulation ( ichief ) is presented to overcome the non - uniqueness problem more effectively and reliably ; the determination of the singular integral coefficients on various occasions is analyzed ; the properties and treatments of the singular integrals with different orders axe studied ; the computation program of the cubic spline ichief is developed and its ability to overcome the non - uniqueness problem and feasibility to discrete the surface coarsely with the sufficient calculation precision are examined through examples
第二章在聲波動理論基礎上，詳細地推導出對應于無限域和半無限域的外部振動聲輻射問題的邊界積分方程計算公式；根據fredholm積分理論，對利用邊界積分方程計算振動聲輻射問題過程中解的非唯一性的產生進行了分析和證明；改進了chief法以提高其克服解的非唯一性的有效性和可靠性；對不同條件下奇性系數的計算、強奇性積分的收斂性及其在變量替換時與普通積分的差異性、不同階奇性積分的計算、數值求積分等進行了研究；開發了三次樣條改進chief法計算軟體，並通過算例考核了該方法在特徵波數處克服解的非唯一性的有效性和在保證計算精度的前提下實現剖分粗化以提高計算效率的可行性。 -
3. again applying the idea of singular blending to case of surfaces, a nuat b - spline interpolating blending surface is constructed by a explicit means and maximum distance between the interpolating surface and singular bilinear patch can be adjusted by the blending parameter similar to the case of the curve above. furthermore, some singular elements such as edges 、 ruled surfaces and plane can be conveniently embedded in the interpolating blending surface
3 .將奇異混合思想應用到曲面插值上，提出了nuatb樣條曲面混合插值方法，該方法不僅給出了插值的顯格式，而且在插值曲面中可任意鑲嵌棱邊、直紋面或平面，利用混合因子，調節插值曲面與相應奇異雙線性曲面片之間的最大距離 -
This paper studies the rational b - splines curves with prescribed poles and surfaces for the first time, and studies the properties of this new surface modeling. the result indicate that this modeling not only have the property of geometric modeling, but also have the agility and availability, and score the singular of curve
本文首次構造了指定極點的有理b樣條曲線曲面，並深入研究了這種新穎曲面模型的性質，結果表明該有理曲面模型不僅具有幾何造型的特點，而且更靈活、更有效，並能刻畫曲線的奇性等固有特性 -
4. the local interpolation methodd above are extended from order 4 to the case of arbitrary order, the existence for singular piecewise function of arbitrary order is proved, and a unite interpolation formula for odd and even - order is given, which develop and perfect the nuat b - spline curve and surface interpolation methods
4 .將四階混合插值法推廣到任意階情形，給出任意階奇異分段函數存在性的證明，並得到了奇數階和偶數階樣條奇異混合插值公式的統一表達式，發展和完善了nuatb樣條插值方法和奇異混合思想 -
Gram - schmidt method for zernike polynomials fit and singular value decomposition ( svd ) are concerned. the direction question for zernike polynomials fit is discussed and the surface error in the normal direction is deduced. to solve - the coupling and mixture of zernike polynomials fit method, rigid - body displacement is removed with coordinate transformation and then fitted with zernike polynomials
介紹了zernike擬合的gram - schmidt以及奇異值分解兩種方法；論述了zernike擬合時的方向問題，計算了法線方向的面形誤差；針對zernike擬合時的藕合與混淆，採用先用齊次坐標變換去除剛體位移，再用奇異值分解進行zernike擬合。 -
On a singular surface of order 1 the deformation gradient and the velocity of the medium may suffer finite discontinuity.
在1級的奇面上，媒質的形變梯度和速度可以經受不連續性。 -
The sensitivity matrix was then decomposed by singular value decomposition ( svd ) method, and the relationship between the surface geometric errors and the uncertainty parameters was formulated
採用矩陣的奇異值分解原理，對曲面最佳適配的靈敏度矩陣進行分解，得到不確定度參數與測點隨機誤差的關系表達式。 -
With loe ’ s idea of singular blending, this paper addresses non - uniform algebraic trigonometric ( nuat ) b - spline curve and surface interpolation methods
本文主要應用loe 』 s的奇異混合思想，研究了非均勻代數三角（ nuat ） b樣條曲線曲面的插值方法 -
A least squares solution via singular value decomposition is used to solve the matrix equation. computations with synthetic data, where the near field of several typical antenna configurations are got over various geometric surface, illustrate the accuracy of the method
為了證明本方法的計算準確性，我們給出了幾個不同輻射源在不同近場測量幾何面下的近場和遠場計算結果，與解析公式的計算結果相比較，一致性很好。
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