| 1. | ( 3 ) we bring bdf method of order two forward as time discrete method for the two - dimension three - temperature heat conduction equations
( 3 )提出使用二阶bdf方法作为二维三温热传导方程的时间离散化方法。 |
| 2. | Abstract : the steady temperature field in irregular plane domain with radiation heat exchange boundary is analyzed by the boundary , discrete method , and the solution in form of series is obtained
文摘:采用边界离散方法对具有辐射换热边界的平面非规则域内稳态温度场进行了分析，得到了级数形式的解。 |
| 3. | Further more , it is pointed out that the boundary discrete method is not only adaptable to solve the nonorthogonal boundary problems of which the variables cml be separated , but also is able to deal with the nonlinear boundary value problems
进一步指出，边界离散方法不仅可以解决某些可分离变量的非正交问题，而且可以解决某些非线性边值问题。 |
| 4. | Abstract : a special method in selecting the basic functions is presented on calculating the synthetic discrete method for the simply supported deep beams and the calculating results for such structures by this method coincide with those from finite element method
文摘:对简支深梁结构应用综合离散法计算时，提出了独特的基函数选取方法，并对此结构作了数值计算，与其它有限元法的计算结果十分吻合。 |
| 5. | 5 ) the fact that the parallel computing designing principles of spectral adjoint model and forecasting modes are equivalent is shown clearly . with the combination continuous and discrete methods , the adjoint model of semi - lagrangian spectral model t l 213l31 is designed
5 )提出了谱离散伴随模式与预报模式的并行计算设计原理具有相同性；应用连续方法和不连续方法相结合，设计业务系统semi ? lagrangian谱离散模式t _ l213l31的伴随。 |
| 6. | The dissertation firstly put forward the running model of vc in china , the risk curve and the two methods that compute the item risk ( namely the continuous method and the discrete method ) . these are instructional meaning for us to develop vc , identify and prevent the risk
本文首次提出我国风险投资运行模式、风险曲线和项目风险的两种计算方法(连续型方法和离散型方法) ，对我国风险投资如何发展，辨识和防范投资中风险都具有一定的指导意义。 |
| 7. | To study the acoustic unsteady combustion of srm , built the acoustic model of chamber . deduced the little amplitude sound wave 3d equation , used the finite volume discrete method to simulate . got the vibration model of three kinds of chamber
为研究固体火箭发动机声不稳定燃烧特性,建立了燃烧室内声学特性分析的物理数学模型,推导了小振幅声波三维波动方程,采用有限体积离散方法进行仿真,得到圆柱型、四片翼柱彤和五片翼柱型药柱三种燃烧室形状声学振动基本模态 |
| 8. | The work in this dissertation mainly consists of two parts . in the first part , the dynamic response of nonlinear structures with uncertain physical parameters is studied by means of subsection linearization method and equivalent random systems method , separately . in the second part , a method for analyzing the response of viscoelastic structures with uncertain physical parameters is proposed , with fem in space domain and discrete method in time domain
本文的研究工作主要由两个部分组成；第一部分是分别用分段线性化方法和等效随机系统方法对含随机参数非线性结构动态响应统计量的求解；第二部分是建立了用扩阶随机有限元方法求解含随机参数粘弹性问题的计算模型。 |
| 9. | Because the wavelet moments that shen proposed . cannot be applied in computer , we put forth a discrete method of wavelet moments . experiments show that the discrete wavelet moments are superior to the traditional moments . because of the disadvantage of k - means and bp algorithm , we use the wavelet neural network in system of image recognition
针对连续小波矩在工程中不宜使用，本文提出了一种实用的离散化方法，并通过计算机仿真与zernike矩和相对不变矩做了比较，证明了离散小波矩特征在抗噪性和识别能力上是较优的。 |
| 10. | Firstly , discrete methods of time and space in the dns are introduced in the present paper . and the procedure of solving the navier - stokes equation is also presented . in addition , ways of correcting time - splitting error and removing aliasing error in pesudospectral transform method are introduced too
本文首先介绍了直接数值模拟中时间和空间离散的方法，并详细介绍方程的求解的步骤以及伪谱法中混淆误差产生的原因及其消除方法，并对时间分裂法造成的散度误差的修正方法进行了简要的介绍。 |
