However, due to the oscillation and singularity of the integrand of Green's function and that integral interval is infinite, it is difficult to compute the function and to control the accuracy.

而格林函數(shù)中被積函數(shù)的振蕩性色哟哟最新入口，奇異性和積分區(qū)間為無窮使得該函數(shù)的計算較為困難欧美亚洲一级黄片，精度不易控制人人操人人尻。

A multiple-step beams model was established to analyze the static stiffness characteristics of the double parallel four-bar mechanism with right angle flexible hinges based on the symmetry of the structure. Formula for calculating the static stiffness was derived by applying singularity function. On the basis of this analysis, the factors influencing the stiffness performance of the double parallel four-bar mechanism were studied from its geometric parameters, and the theoretical model was verified by finite element method.

根據(jù)其結(jié)構(gòu)的對稱性建立了靜剛度分析的階梯梁模型超碰97青青久久人人澡，引入奇異函數(shù)法推導(dǎo)了柔性雙平行四桿機構(gòu)的靜剛度計算公式激情一级片，在此基礎(chǔ)上国产尤物视频一区，分析了柔性雙平行四桿機構(gòu)各尺寸參數(shù)對其靜剛度的影響，并采用有限元方法對理論模型進行了驗證亚洲国产精品无码第一二区。

In development of these programs under cylindrical coordinates, the singularity at the pole and transfer phenomenon across the pole were studied deeply and a numerical method which has made these programs efficient in 3D function was advanced and employed to eliminate the singularity by setting up a special mesh at the pole on the polar plane.

針對煉鋼生產(chǎn)鋼包吹氣攪拌精煉工藝亚洲欧美日韩人人操久久，本論文從開發(fā)數(shù)值仿真程序入手，分別對吹氣攪拌條件下鋼包金屬熔池體系的流體流動亚洲欧美视频一区、傳熱和傳質(zhì)18网站黄色入口、夾雜物碰撞長大和排除等傳輸現(xiàn)象進行了數(shù)學(xué)模型或物理模型研究。

Cylindrical Bessel function：貝塞爾柱函數(shù)

Singularity 奇異點 | Cylindrical Bessel function 貝塞爾柱函數(shù) | Gradient 梯度

direct transcendental singularity：直接超越奇異點

順推群系 direct system of groups | 直接超越奇異點 direct transcendental singularity | 三角函數(shù) direct trigonometric function

direct trigonometric function：三角函數(shù)

直接超越奇異點 direct transcendental singularity | 三角函數(shù) direct trigonometric function | 直并 direct union