查询词典 approximate method

The nonlinear equation of heat conduction is transformed into a Laplace′s equation by applying the Kirchhoff transformation ,and an analytic approximate solution of the equation is derived.

当介质的导热系数是温度的函数时，热传导方程是非线性偏微分方程，作者采用基尔霍夫变换把它变成拉普拉斯方程，于是可以找到原问题的近似解析解。

Approximate equivalent transformation includes expanding process and reduction process.

约等价变换过程包括知识的约等价扩充和约等价约简。

The known knowledge regarded as referential knowledge produces new knowledge through equivalent and approximate equivalent transformation.

以已有的知识作为参照知识，经过等价变换或约等价变换，产生新的知识。

When the error of measurement instrument is known, the simulation approximate precision of the model was studied.

研究了在已知测量仪器误差的情况下模型的拟合精度，得到了较为满意的结果。

The expressions of polynomial and neural network are used to approximate angular error, it is demonstrated that the variance error by using neural network is smaller, which raises a higher request on the performance of the computer.

本文研究了误差模型的存贮方式问题，对于误差拟合采用了多项式法和神经网络方法，神经网络法的逼近程度高，但对计算机的性能要求也高。

We can not apply Galerkin methods with radial basis functions to the first boundary value problem (the Dirichlet boundary value problem) of the second-order elliptic equation, because it requires that the approximate functions should fit the essential boundary condition, while the spaces spanned by the radial basis functions fails to satisfy this kind of boundary condition, and it is the same for the higher-order elliptic equation.

我们不能直接应用这样的无网格算法求解二阶椭圆型方程的第一类边值问题(Dirichlet边值问题)，因为第一类边界条件是本质边界条件(对二阶椭圆型方程为Dirichlet边界条件)，而径向基函数的支集通常是全空间，由它们所生成的近似函数空间一般不满足这样的条件。

At your request, we gave you an estimate of approximate requirements for next year.

应你们的请求，我们给你一个明年大概需要量的估计数。

In the feature selection stage,the computing approximate gains in parallel is adopted in order to solve the computational expensiveness of the model and system spending.

在特征选择阶段，采用计算近似增益的平行算法，解决模型计算量过大和系统开销问题。

This paper studies the relationship between the approximate confidence and the statistical curvature in nonlinear exponential family regression models with linear restriction from geometric point of view.

本文从几何的观点，研究了带有线性约束的指数族非线性回归模型下参数的近似置信域与统计模型曲率之间的一般联系，获得了参数的近似置信域。

Theoretical calculation shows: the temperature dependence of CRSS obeys the approximate exponential law, which agrees with experimental law.

本文计算了Al、Cu、Fe和Mo的临界切应力与温度的关系。

Researches reveal that students who suffer from corporal punishment tend to resort to violence in their future life.

研究表明遭受过肉体惩罚的孩子倾向于在他们今后的人生中使用暴力。

Total sugar of sarcocarp and chlorophyll of pericarp increased firstly, and then decreased afterward along with altitude; Titratable acidity, ascorbicacid and anthocyanin of pericarp were increased along with altitude; The content of protein increased firstly and decreased afterward along with altitude; Carotenoid of pericarp were decreased along with altitude.

果肉总糖和果皮叶绿素含量随海拔高度升高先升高后降低；可滴定酸、维生素C和果皮花青苷含量均随海拔升高而升高；蛋白质在1720m处最大，1420m处最小；果皮类胡萝卜素随海拔升高而降低。