查询词典 summation formula

The research indicates that the interior scattering sound field can be expressed as the summation of the interior scattering sound field of the closed shell and the external scattering sound field of these scatterers.

研究结果表明，该内部散射声场可表示为封闭薄壳的内部散射声场和这些内部散射体的外部散射声场之和的形式。

Applying the summation of V/s to a class of control system most in use and to the conjugate systems of this class , several explicit criteria which can be dire.

应用对各子系统的Liapunov函数求和方法，得到了常用控制系统及其共轭系统的绝对稳定的便于直接应用的显式判据。

Consequently, each number entered in the contingency table of Table 5, is, in fact, a summation of the weights properly assigned.

所以，输入列联表5中的数字实际上是指定的权重的加和。

At last a direct numerical integration method is applied to computing the integration, and in this process continued fraction expansion was used to speed up integral summation.

在此过程中通过连分式展开加快积分求和的收敛速度。

Based on the summation of numerical solutions of the free water surface seepage flow, a new concept called Regional Identification Function is put forward. It is pointed out that the reason why the initial flow method is unstable is that the RIF is discontinuous. Linearization continuity method for the RIF is suggested and then a revised initial flow method is presented.

在总结现有自由面渗流求解方法的基础上，提出了区域识别函数的新概念，指出区域识别函数不连续是导致初流量法解不稳定的主要原因，并对此函数进行了线性微调，提出了改进初流量法。

Integration is just a summation over a continuous section of a curve, so that won't stay scary for very long, either.

积分是一段连续曲线的相加，所以那不会让你郁闷太久。

Integration is just a summation over a continuous section ofa curve, so that won't stay scary for very long, either.

积分是一段连续曲线的相加，所以那不会让你郁闷太久。

Thus we solve the summation problem of slowly convergent series efficiently.

有效地解决了慢收敛级数的求和问题。

The inability to describe all goods in terms of a single valuation measure made cumulation and summation difficult and the development of a cohesive accounting system all but impossible.

由于没有统一形式的价值尺度来度量所有的物品，这使得累积与计数非常困难，因此缜密的会计系统的发展则几乎不可能。

From that summation point the new part of the PFC circuit, the current inrush limiter device framed in at 4 starts.

PFC电路的新的部分，即位于框4中的浪涌电流限制器设备自该求和点开始。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。