查询词典 evaluation of integrals

In the procedure of computing impedance matrix elements, an improved method of accurate evaluation of retarded time integrals with singularity in self-impedance elements in MOT scheme is presented, which improve the late-time stability of MOT scheme.

在阻抗矩阵元素计算中，研究了一种基于Duffy变换的包含时间迟滞项的奇异积分的精确计算方法，提高了计算精度，改善了MOT求解积分方程中的晚时不稳定性。

In order to speed up the k-PNN query processing,efficient spatial and probabilistic pruning approaches are used to reduce the search space,thus the costly numerical evaluation of complex integrals can be avoided as much aspossible.

因此，必须尽量缩小查询所需搜索的空间范围，从而在不影响返回正确结果集的情况下，进一步减少所要考虑的非确定对象，在很大程度上避免利用原始计算公式来返回结果集。

When a solid regionin three-space is symmetric with respect to a point, the evaluation of triple integrals over is often facilitated by using spherical coordinates.

当空间立体区域关于某个点对称时，计算上的三重积分通常使用球坐标比较容易。

Some closedforms of formulae are also obtained for the evaluation of the Cauchy prin-cipal integrals over quadratic boundary elements and linear internal cells of2-D problems.

通过采用以上各种技术成功地解决了三维弹塑性有限形变问题边界元法中最关键的数值积分的精度和效率问题。

When a solid region in three-space has an axis of symmetry, the evaluation of triple integrals overis often facilitated by using cylindrical coordinates.

当空间立体区域有一个对称轴时，计算上的三重积分通常使用柱坐标比较容易。

And presents a non singular algorithm to deal with the difficult problem of the evaluation of the nearly strong singular and hypersingular integrals.

所以几乎强奇异和超奇异积分被化为无奇异的规则积分与解析积分的和，可由通常的Gauss数值积分解出。

So how to accurately and quickly calculate the Sommerfeld integrals is the key to the evaluation of the above problem.

如何快速、精确、有效地求解索末菲积分是研究这类天线的主要问题之一。

So how to accurately and quickly calculate the Sommerfeld integrals is the key to the evaluation of the above problem.

因此准确、有效地计算索末菲积分是研究上述问题的关键。

According to the safety evaluation general rule, safety acceptance evaluation guideline and the work on safety acceptance evaluation for Line 1, Nan...

笔者根据安全评价通则、安全验收评价导则及在南京地铁一号线工程安全验收评价工作的基础上，提出城市轨道交通工程安全验收评价主体思路、评价重点及评价方法。

Based on regulation study, this paper adopts case analysis to establish tax cost and efficiency evaluation index system, and designs index weight with analytic hierarchy process, so that the evaluation index is more scientific and the evaluation result is more impersonal and effective; secondly, innovation in index design.

本文在规范性研究的基础上，采用案例分析，建立税收成本与税收效率的评估指标体系，用层次分析法设计指标的权重，使得评价指标更科学合理，评价结果更客观有效；二、指标设计创新。

The changes of the HAF after liver injury may be related to the volume of blood loss, the intraabdominal pressure and the pneumoperitoneum duration.

肝撞击伤伴失血后肝动脉血流量的变化与失血量、气腹压力以及气腹持续时间等有密切联系。

Reneging on our commitments to the world's poor cannot be an austerity measure, she said.

放弃我们给世界上的穷国的承诺不能成为一种紧缩措施。