计算公式

First a quad with the center at the bottom origin is presented.

首先是一个中心点在底部的四边形四个顶点的计算公式。

This paper has studied the cumulative waiting time of the passengers in the bus station from two perspectives, and has induced their calculation formula with the Markov queuing process theory and the characteristics of the generating function.

从两个角度研究了公交站点乘客的累积等车时间，并根据随机过程理论推导出其均值的计算公式。

Equations of the force acting on the oil droplet are given based on the analysis of radial pressure field. These equations point out that this force directs to the core and may improve the separation.

在研究压力分布的基础上，给出了径向压力场作用在液滴上力的计算公式，并指出这个力指向核心，有利于分散相液滴的分离。

We introduced principle of this method,and deduced ranging formula.

介绍了该方法的原理，并推导了距离的计算公式。

The uniformity degree and rank of the population are given to measure the distribution and quality of the solutions in the population based on the characteristic. Using the uniform degree of the population as objective function and the rank as the constrained condition, the bi-objective optimization problem is transformed into a single objective constrained optimization problem. The computational equations of the charge and force exerted on the particles are presented.

针对这一特点，定义了种群的均匀度和序值，来度量种群中解的分布和质量，将双目标优化问题转化为以均匀度为目标函数，序值为约束条件的单目标优化问题；设计了双目标优化问题粒子的电荷和受力的计算公式，提出了一种新的类电磁算法求解问题。

This paper puts forward the derivation of precise calculating formula used to determine the magnification ratio of voltage, input resistance and output resistance in amplifying circuits based on the feedback circuit model with parallel voltage.

在建立电流并联反馈电路模型的基础上，推导出放大电路中的电压放大倍数、输入电阻、输出电阻的精确计算公式。

Properties of the reciprocal of δ_k function and it' s mean value are study, using analytic methods give an exact calculating formula for the reciprocal of δ_k function.

研究了δ_k函数倒数的性质及其均值估计问题，利用解析的方法得到关于δ_k函数倒数的一个精确的计算公式。

The conventional numerical simulation of a reverberant field as a launch acoustic environment was introduced. Following the reciprocity theorem used in the coupled FE-BE model, the structural response due to reverberant acoustic excitation was substituted by the sound pressure caused by force excitation on the structure, then the output response power spectrum density of the coupled model subjected to reverberant environment was evaluated based on the stochastic analysis principle.

首先介绍了传统的构建混响声场的数值模拟方法；其后利用声振耦合中的互易定理，将混响声场的激励问题转化为结构模型上力激励引起的场点声压响应问题，并采用随机分析原理，用谱分析方法推导了结构在混响声场激励下的响应计算公式；最后建立了航天器典型结构的声振耦合模型，并分别用传统方法和利用互易定理的方法进行了数值模拟。

The recommendatory formulas of the critical hoist flow velocity and pipeline resistance were presented for the engineering by comparing the previous studies.

通过比较已有的研究成果，本文总结了适于工程实际中使用的粗颗粒垂直管水力提升临界提升流速和管道输送阻力的计算公式。

This article offers a recursion formula of the total sum through the study of the total sum of the Cnm terms.

通过对这C_n~m项总和的研究，得到了一个总和的递推计算公式，给出了它的简便运算法则，并在研究过程中，意外地发现了两个非常有趣的推论。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。