本文仔细研究了分支水平井产能公式的架构过程，发现存在两处理论缺陷和三次数学近似。
The process of structuring the multi-lateral horizontal well productivity formula was carefully studied, and two theory defects and three mathematical approximation were detected.
本文给出了天体物理学中辐射转移方程的几种近似解法，讨论了数学近似和物理条件如何吻合，发现：数学上的近似常常不影响物理上完整和自洽。
This, paper gives some approximative solving methods of radiative transfer equation in astrophysics. It is found that mathematical approximations of ten are complete and accurate in physics.
对于数学题，你可以用近似法省时间。
With mathematical problems, you can save time by approximating.
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。
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.
模糊集与模糊逻辑是处理大量存在的不确定性与模糊性信息的重要数学工具，在近似推理等领域有着广泛的应用。
Fuzzy sets and fuzzy logic are important mathematical tools for processing uncertain and vague information, which has been widely applied to approximate reasoning and so on.
介绍了配送问题的两个数学模型及近似算法。
Two maths models and the approximate algorithm of distribution transportation are introduced.
热工过程的动态数学模型通常通过现场试验作出它的阶跃响应曲线，然后从阶跃响应曲线得出近似传递函数。
In general, the dynamic math model of a thermal process is an approximate transfer function obtained from step response curve which is figured through field experiment.
协同利用数学变换、高精度近似和二级逼近策略，提出了一种求解结构优化问题的准解析法。
A quasi analytic method for solving structural optimization problems is developed by coordinated use of mathematical transformations, high quality approximation and two level approximation strategy.
利用数学形态学对含有胎儿头部轮廓的医学图像进行预处理，提取近似圆形的胎儿大脑轮廓的骨架。
Medical Images including head outline are preprocessed by using mathematical morphology, and the skeleton of fetus' head outline with an approximate rotundity can be extracted.
本文提出一种求解优化数学模型，属于非线性整数规划问题的方法——逐次近似法。
In this paper, an optimal mathematical model solving method, the successive approximation method, of the nature of nonlinear integral programming problem is suggested.
加权残值法是一种可以直接从偏微分方程中求得近似解的数学方法。
The method of weighted residuals is a mathematic procedure with which approximate solutions can be obtained directly from partial differential equations.
迄今为止，除了少数未从数学上严格证明其收敛性的精确解外，大多数均采用近似方法求解。
So far many approximate methods have been used to solve the large deflection problems except that only a few exact solutions have been investigated but no strict proof on convergence is presented yet.
研究1/3次分频铁磁谐振的近似解析方法常因涉及过多的繁琐数学推导而使众多技术人员望而生畏。
The excessive and tedious mathematical deduction involved in an approximate analytical methods for 1/3 subharmonic ferroresonance makes many technicians to shrink back.
本文从混合变分法原理着手，对弹性接触问题提出一种新的数学模式，并从中导出有限元的近似公式。
A new mathematical model for the non-Hertz contact problems is proposed based on the mixed variational principle. From this model, the finite element approximate formulae are derived.
应用数学与力学经常使用小参数摄动近似。
The small parameter perturbation approximation is applied quite often in applied mathematics and mechanics.
并将复杂的数学模型近似地转换成多个用于控制系统的线性简化模型。
Using the dynamic data simplified models which approximate to the linear models are constructed for control purpose.
以实验为基础的物理学的每一个定律被推到极端的情况，将被发现是统计的和近似的，而不是数学上完美的和精确的。
It is to be found that each physics law, which based on experiment, is not mathematical perfect and accurate, but statistic and proximate in the extreme situation.
这是气象观测数据在使用三角函数近似的参与随机数发生器的数学仪器技术。
It is meteorological observation data approximated while using trigonometric functions with the involvement of mathematical apparatus technique of random number generator.
本文主要致力于支持向量机、近似支持向量机的学习算法研究，特征提取的数学模型与算法的改进及其应用，聚类分析算法的收敛性证明。
This paper's main works is that: learning algorithm studies of support vector machine, mathematical model and application about feature selection, convergence analysis of clustering algorithm.
在研究矩形件优化排样数学模型的基础上，根据不同的下料的工艺要求，构造出与之相适应的四种不同的近似优化算法。
Based on researching mathematical model for optimal layout of rectangular piece, the paper constructs four optimal layout algorithms according to different processing technology conditions.
针对模糊数学如何正确认识其模糊性、清晰性、随机性及近似性与模糊性之间的区别与联系进行了讨论。
This paper discusses the relationship between fuzzy mathematies and traditional mathematies, some easy mixed definitions its clarification, stochastic and approximation.
通过对不可展回转曲面近似展开方法的研究，得到了回转曲面近似展开、精度分析和误差矫正的数学模型。
By study the method of approximate development of surface of revolution, the mathematiccal model of approximate development, precision analysis and error correction has been gained.
本文中介绍了该提取方法得出的过程，使用的物理模型及假设，数学原理及近似解法等。
We lay emphasis on the process of obtaining this information. such as the mathematical model and its hypotheses. the mathematical theorem and approximate solution.
为避开三相交流异步电动机和变频器的数学模型，利用飞升曲线法简单近似确定各环节的数学模型。
For avoiding the math models of three-phase AC electromotor and frequency inverter, adopt the simple similarity of ascending curve method to ensure the math models of every loop.
根据求解数学期望的近似算法，提出了一种新的随机可靠性灵敏度分析的通用方法。
On the basis of approximate algorithm for expectation, a general RS algorithm is presented.
有限集田近似方法与平均场近似相比，在数学上处理同样简单，但可给出更好的结果。
The finite cluster approximation method is conceptually as simple as an ordinary mean field approximation, but gives much better results.
最后本文就循环流化床锅炉水冷壁磨损问题建立了有关数学模型，并利用有关参数进行了水冷壁磨损的近似计算。
At the end, the paper built the mathematical simulation of CFB boiler water wall wear and some approximate calculations was done on water wall wear by making use of some related parameters.
针对光导开关产生的非线性电脉冲进行合理化近似并建立数学模型。
Maths model of nonlinear electric pulse generated by PCSS's is built.
简立方晶体中的计算对晶体作了各向同性近似，虽然各向同性数学计算简单，并且可以得到一些有用的结果，但得到的结果仅仅数值表达式，不能反映其物理本质。
The approximation of isotropy was considered in simple cubic which makes the mathematics be simple, but the result is only described by number which doesn't reflect essence in physic.
建立了近似数学模型和介绍了近似计算方法。
The establishment of approximative mathematical model and approximative calculation are presented.
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