在非线性偏微分方程中，根据弱可压缩液体的假设，忽略二次梯度项，在试井较长时间内将产生误差。
According to the assumption of slightly compressible fluid, neglected the quadratic gradient term in nonlinear partial differential equation is usually lead to error.
二维平行壁面剪切流动进入混沌的现象可用含二次非线性项的强迫振动方程来描述。
The bifurcation and chaotic process of two-dimensional parallel wall shear flows are described by the forced oscillation equation containing a square nonlinear term.
改进了原模式的盐度差分格式和方程，采用二阶精度差分格式并引入了物理扩散项。
Modifying the salinity difference format and salinity equations of the original model, the present model USES the second-order accurate difference format and introduces the term of physical diffusion.
应用蒙特卡罗数值模拟与二项分布累积概率评定方程相结合的方法，对某燃气源点火器的性能可靠性进行评定。
The paper uses Monte Carlo digital simulation and reliability assessment equation of binomial distribution to assess the performance reliability of the ignition device for a gas generator.
基于当代认知心理学有关应用题解答的研究成果，笔者选择了样例学习理论和图式理论作为研究依据，就一元二次方程应用题进行了一项教学实验。
This paper is a report of a teaching experiment on word problems on quadratic equations with one unknown based on the theory of schemas a.
该原理通过消去变压器回路方程中直接体现主磁通的非线性项，构造了仅含漏电感和绕组电阻的二端网络。
On basis of transformer loop equation, a novel principle of transformer protection using equivalent instantaneous leakage inductance is presented.
该方程组不仅包含二次及三次非线性项，而且体现了参数激励与外激励的联合作用。
The equations of motion of beam, which includes not only quadratic and cubic nonlinearities but also parametric and forced excitations are derived using Kane's equation.
本文综合运用了一些金融研究方法，如偏微分方程以及二项式等方法对可转换债券的定价问题进行了深入的研究。
The pricing of convertible bonds is further studied in this paper by taking advantage of Modern Financial mathematics, Financial Engineering, Partial Differential Equations and Binomial Method.
对二维浅水方程粘性项给出了一个离散方案，并将其应用于求解后台阶流动问题。
We give a discretization method for the viscous terms of the two-dimensional shallow water equations , and the obtained discretized equations are used to solve the backward-facing step flow problem.
通过分析该区的试采井资料，得到了指数式产能方程、二项式产能方程及油井产能递减方程，同时计算了单井控制可采储量。
By analyzing the production test data, we get the index production equation, binomial production, production degression equation and the single well control reserve.
基于气井二项式产能方程，介绍了一种新的求二项式产能方程的新方法的基本原理，并应用该方法对塔河油田部分井进行了分析。
Based on the traditional binomial productivity equation, this paper introduced a basic principle of a new method and applied it to analyze part Wells of Tahe oilfield.
利用F函数改进的立方状态方程—FRKS方程，并在二元互作用函数中引入压力项因子，对高压下二元系的超额体积进行拟合。
The FRKS equation of state and the improved LL mixing rule were used to correlate excess volumes of binary mixture to gain binary parameters.
算例表明，用干气二项式方程将过高地估计凝析气井产能，因而是不适合的。
The calculated results show that the binomial equation used in the dry gas condition is unsuitable for modelling deliverability of gas condensate well due to its overpredictions.
将降深表达式中的两个井函数利用其展开式的前三项作为其近似式，建立一个二元线性回归方程。
Taking the first three teams of the expression of Theis exact solution as the approximation of the two wall functions describing the drawdown, the binary linear regression expression is developed.
其次我们得到一类带有非线性扩散项的MBSC B方程组在二维有界区域上弱解的存在唯一性。
Then the existence and uniqueness of weak solutions for a BSCB System with nonlinear diffusion term are established on 2-d bounded domains.
其次我们得到一类带有非线性扩散项的MBSC B方程组在二维有界区域上弱解的存在唯一性。
Then the existence and uniqueness of weak solutions for a BSCB System with nonlinear diffusion term are established on 2-d bounded domains.
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