A new theory for studying temporal aberrations of dynamic electron optical imaging systems by the direct integral method (DIM) is put forward.
提出了直接积分法(DIM)研究动态电子光学成像系统时间像差的理论。
The iterative method is added into direct integral method to analyze forced vibration problem of laminated composite shallow shells while the relative formulas are derived.
为了求解复合材料多层扁壳在初始薄膜力时的强迫振动，在直接积分法中加入了迭代步骤，推导出了相应的公式和计算步骤。
In addition, the present direct integral method can be used to evaluate the velocity distribution for external flow field correctly where the method of gradient cannot be used at all.
此外，直接积分法还可正确地计算外部流场速度分布。这是偶强梯度法不能完成的。
The two-level discrete complex image method is used to compute the spatial Green's Function, and thus improves the speed to compute Green's function compared with the direct integral method.
该方法采用二级离散复镜像方法求解空间域的格林函数，与直接数值积分方法相比，提高了计算格林函数的速度。
Abstract: The properties of solitary wave solution to multidimensional regularized long wave equations is discussed and one of its solitary wave solution is obtained by direct integral method.
文摘：本文讨论了高维正则长波方程的孤立波解的性态，同时运用直接积分法获得了它的一个孤立波解。
To verify this method, comparing the result with direct integral, the difference is very small, but the calculation rate is efficient.
分析结果与直接积分进行对比相对偏差很小，验证了方法的正确性，同时使计算速度得到了提高。
When the direct boundary element method (DBEM) is used to solve an elastic problem and the field point coincides with the load point, the boundary integral will be strange.
在用直接边界元法解决弹性问题时，当场点与加载点重合时，边界积分方程将出现奇异。
Due to intense oscillation of these integral, calculation using direct numerical integral, i. e., GPSS (the generalized point source synthesis method), is complex.
由于这类积分的强烈振荡性，直接数值积分，即通常的广义点源叠加方法(GPSS)，计算比较复杂。
The direct problem was solved by DRBEM, which eliminated the drawback of domain integral for classical boundary element method and resulted in pure boundary integral calculation.
正问题采用双倒易边界元法求解，该法避免了传统边界元法需进行区域积分的缺点，仅需纯边界积分计算。
The method requires less computation time and smaller memory than the direct computation of volume integral equations, since the large scale matrix inversion may be avoided.
由于不必进行直接的大型矩阵求逆运算，因而与体积分方程的直接解法相比，所需的机时更少，并减少了对内存的要求。
In this paper, we study the direct method of solution for a class of singular integral equations with solutions having singularities of order one.
本文研究了一类具有一阶奇异性解的完全奇异积分方程的直接解法。
An integral method associated with direct and inverse mode is presented for the calculation of compressible turbulent boundary layer with separations over airfoil.
本文介绍了一种求解二维可压缩紊流分离边界层的正反积分方法。
Then, use the direct integral calculus method of NEWMARK to solve solution, and get each node and element's displacement and stress solution vs. time.
然后，用NEWMARK直接积分法进行求解，得到各节点和单元的位移、应力的时程解。
Then, use the direct integral calculus method of NEWMARK to solve solution, and get each node and element's displacement and stress solution vs. time.
然后，用NEWMARK直接积分法进行求解，得到各节点和单元的位移、应力的时程解。
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