Poisson theorem and De Moivre-Laplace theorem present the approximate calculation formula of binomial distribution.
泊松定理、隶莫佛-拉普拉斯定理给出了二项分布的近似计算公式。
With the condition of the basic hypothesis, the approximate calculation formula was worked out on the gas folwing speed in the tubular centrifugal ventilator.
在基本假设的条件下，导出了筒形离心式通风机筒壳内气体流动速度的近似计算公式。
By using perturbation mode, we study the free falling eastward body, and present the first approximate calculation formula of the rotation angular velocity of the earth.
应用微扰论的方法对落体偏东进行研究，给出了在地球自转角速度一级近似下的计算公式。
An accurate linear damping calculation formula for free vibration system has been deduced and the application limits of the corresponding approximate calculation formula has been discussed as well.
本文推导出了自由衰减系统线性内耗准确计算公式，并讨论了原有的自由衰减系统线性内耗近似计算公式应用范围。
So, predigested calculation was applied to find the simple approximate formula meeting the request of engineering precision.
因此，本文对其进行简化，得出满足工程精度要求的简易近似计算公式。
Research is carried out on the discrete noise theory and calculation method, the calculation model of discrete noise and the approximate formula under small Mach number are verified by experiments.
对低马赫数叶轮离散噪声的机理及计算方法进行了研究，并推导了离散噪声的声压计算式、低马赫数下近似计算式和轴心线上的计算式，还实验验证了计算模型。
In this paper, we extend and improve the rectangle formula of definite integrals 'approximate calculation.
本文推广和改进了定积分近似计算的矩形公式。
Makes the approximate calculation by the use of differentiation, and puts forward the simple and easy formula of second feeding in processing gear.
应用微分法作近似计算，推导出了齿轮加工中计算第二次径向进刀量的简易公式。
According to the results of calculation and analysis, Colebrook formula is considered as a accurate formula, and approximate formulae only can be made rough calculation and mathematical analysis.
计算和分析结果表明：科尔布鲁克公式是紊流混摩区的较准确的计算公式，近似公式只适用于粗略的计算和数学分析。
When using a common sampling tube, a formula for approximate calculation of the flow in the sampling tube is needed to meet the request of equi-speed sampling.
在使用普通型采样管时，为了满足采样现场的要求，应有一个与之相适应的等速采样流量近似计算公式。
Calculation example shows that fatigue check and computation of steel truss bridge becomes simpler and more convenient by employing approximate formula.
算例说明，应用近似计算式将使三线钢桁梁桥的疲劳检算变得简单、方便。
Based on the geological mechanical model, the paper USES approximate analysis method, reaching the actual theory calculation formula.
本文以其地质力学模型为背景，采用逼近法进行分析探讨，得出了符合实际的理论计算公式。
An approximate formula of linear error about TS-B3 temperature sensors and calculation methods about circuit parameter were given by theory analysis.
通过理论分析，给出了TS -B3型温度传感器线性化误差的近似计算式及电路参数的计算方法。
On the basis of approximate effect, the calculation formula of temperature field with elliptic Gaussian beam radiation has been deduced and widely applied.
基于这种近似，人们导出了椭圆高斯光束辐照温度场计算公式，并获得广泛应用。
The formula presented in Tom 3 of "Mining Design Manual" is for approximate calculation, the area value determined from which is some less than that obtained from the formula given here.
在《采矿设计手册》第3卷载的圆弧拱巷道断面积公式是近似计算的，其值比本文推导公式的值稍小。
The formula presented in Tom 3 of "Mining Design Manual" is for approximate calculation, the area value determined from which is some less than that obtained from the formula given here.
在《采矿设计手册》第3卷载的圆弧拱巷道断面积公式是近似计算的，其值比本文推导公式的值稍小。
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