通常，你只会在这两种情况下用替代法，或者这可以极大地简化被积函数，或者就是这可以简化，积分的上下限。
I mean, normally, you would only do this kind of substitution if either it simplifies a lot the function you are integrating, or it simplifies a lot the region on which you are integrating.
本文提出了用优化连续法研究曲柄滑块机构的近似函数综合。
This article provides an optimizing series method to study the approximate function synthesis of the slider-crank mechanism.
结论：用幂函数曲线法来提高眼底图像对比度的效果是比较好的。
CONCLUSION: It is better effect of exponential curve method on improving contrast of image of eye fundus.
本文在比较基于能量的各种算法的基础上提出了建立目标函数，用梯度法实现定位的算法。
Based on the comparison of different algorithms of energy, we create a target function, and use grads method to realize localization.
本文还给出了一种简练的函数构造法，用该方法构造的函数能较好地逼近活动工期概率密度函数，方便了对计划网络图的计算机仿真运算。
It also gives a construction approach for approximating the probability density function of activity duration, which will facilitate the computer simulation of the PERT diagram.
指出用三次样条插值函数法只能解决由一组曲线族组成的图表处理问题。
The use of cubic spline interpolation function method can only solve the processing problem of nomographs consisting of one family curves.
本文用状态函数法导出无机化学中水合离子生成热绝对值与相对值之间的关系。
In the paper, it is given that the relation value between relative and absolute heat of formation of hydrated ions by state function method.
本文用传递函数的模态分析法研究了电机定子铁芯的振动模态，介绍了试验原理、装置及测试结果。
In this paper, the test for vibration mode of stator core of an electric - al motor are studied using the transfer function mode techniques.
用基于张量格林函数的体积分方程法对层状地层中一个油藏的动态变化过程进行了瞬变电磁响应的正演模拟。
The volume integral equation method based on tensor Greens function is used to modeling the transient electromagnetic responses from a reservoir in a layered formation.
快群方程用格林函数节块法进行求解。
The fast group equation is solved by the Green's function method.
首先，用多尺度法导出弱非线性强迫激励系统的频率响应函数。
Firstly, by means of multiple scale method the frequency response function of weakly nonlinear vibration system is derived.
本文通过有限元法求解用流函数表示的拉普拉斯方程，进而计算轴流式机组的静态轴向水推力。
In this thesis, the Finite Element Method is applied to the solution of the Laplace equation formulated by means of stream function for the calculation of the static hydraulic thrust.
用解析法设计函数生成机构，要解决的关键问题是两连架杆位置方程式的求解。
The key problem to be solved in establishing function resultant mechanism by analytic method is to calculate the equation of two connected rod clevis.
用格林函数节块法求解圆柱几何中子扩散方程时，可用平板几何格林函数代替复杂的圆柱几何格林函数。
The Green's function in Cartesian geometry can be used to replace the complex Green's function in cylindrical geometry when solving the neutron diffusion equation in cylindrical geometry.
用逐次超松驰迭代法求出了扭转应力函数差分值。
Using the successive over-relaxation method, the difference values of the torsion stress function are determined.
用变量梯度法构造李雅普·诺夫函数，解决一类二阶非线性系统解的全局渐近稳定性问题。
This article makes use of variable gradient method and structure Lyapunov Function to solve a kind of global asymptotic stability for solutions of non-linear system of the second order.
用双曲函数法，成功得到了非线性浅水长波近似方程组的精确孤立波解。
We successfully derived some exact solitary wave solutions of the nonlinear approximate equations with long waves in shallow water by using the hyperbola function method.
用特定系数法、换元法、配方法探求二元二次函数的极值公式。
The extremal formula of binary quadratic functions is studied by using method of undetermined coefficients, substitution method and method of completing the square.
写出阻尼谐振子的哈密顿函数，对其直接量子化，用分离变量法得出了薛定谔方程的解。
The Schrdinger equation is given directly from the classical Hamiltonian function of a damping harmonic oscillator, and its solution is obtained by the separation of variables.
本文报告了用正交函数法直接测定辅酶Q_（10）注射液含量的方法。
This paper reports that the content of coenzyme Q_(10) injection can be directly determined by orthogonal function spectrophotometry.
结论用幂函数曲线法来提高眼底图像对比度的效果是比较好的。
Conclusion: the effect is quite good to enhance the eyeground image contrast with the power function curve.
用平均平滑周期图法分别估算出信号与噪声的功率谱密度函数。
The power spectrum of the noise and signal are estimated by the average smooth periodogram method.
旨在探讨用边界元法求解响应函数的理论方法。
Theory of solving the response function by boundary element method is discussed.
用流函数法确定了实心薄壁铝型材挤压变形动可容速度场、应变速率场及上限功率。
The flow function method is used to define the kinematically admissible velocity field, the strain rate field and the upper bound deformation power of solid aluminum shape with thin wall extrusion.
试验结果表明：付立叶级数滤波法是一种行之有效的方法，并便利于用调制传递函数评价影象质量。
The results show that Fourier Series Smoothing method is not only an efficient method, but also is easy to estimate image quality using modulation transfer function.
用循环计数法求出载荷及应力幅频率分布，用概率密度函数拟合，为疲劳设计提供可靠性高的数据资。
The loads and the distribution of stress amplitude frequency are obtained by cycle count and reliable data for fatigue design are provided by probability density function fit.
提出用一种新方法——构造法证明多元函数极限不存在，并得到了证明多元函数极限不存在的新条件。
A new method is provided to prove the non-existence of multivariable function limit by virtue of construction method.
过程的动态特性用传递函数加纯滞后描述，用频域法分析了算法的稳定性，并给出了鲁棒稳定界，仿真验证了算法的有效性。
The stability of the algorithm is analyzed by method in frequency domain, and the stable boundary of robustness is given. The effectiveness of this algorithm is verified by simulation.
这一修正方法及修正公式可广泛应用于凡是用瞬态激励法(阶跃函数输入和斜坡函数输入)对压力传感器、力传感器以及其它各种传感器的动态和准静态标定中。
The correction methods and equations can be used for dynamic and quasi-static calibrations of pres - sure, force and other transducers in transient excited methods of step or ramp function inputs.
提出用离散曲率法提取特征点，曲率表达式包含了高斯核函数曲线，选用了合适的离散尺度因子。
The discrete curvature arithmetic was used to extract feature points, which the curvature expression contains Gaussian nuclear function and chooses appropriate discrete scale factor.
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