导数

Absorbance ratio derivative method was developed for the simultaneous determination of glyoxal and glyoxylic acid.

利用比值导数波谱法同时检测乙二醛和乙醛酸，为GLY催化氧化过程的实时、快速分析提供了新的手段。

The results showed that V_2O_5/C catalyst exhibited obvious activity for glyoxal oxidation and high selectivity of glyoxylic acid.

在确定了催化体系中氧化产物的基础上，建立了比值导数波谱法同时分析乙二醛和乙醛酸，该法为乙二醛催化氧化过程的实时、快速分析提供了新的手段。

The total of these two sorts of functions is called S-functions The indicial function, sinusoidal function, cosinusoidal function, hyperbolic sinusoidal function, hyperbolic cosinusoidal function, trigonometric function of n-order and hyperbolic function of n-order etch are all belong to S-functions.

指数函数、正弦函数、余弦函数、双曲正弦、双曲余弦、n阶三角函数和n阶双曲函数等。都是S－函数的特殊形式。文中证明了关于S－函数及其各阶导数的性质的三个定理。

With the guide of non-linear program theory, by using interpolative steps and inexact line search, an improved conjugate gradient method was found, by which the training rate of BP networks increases by tens or hundreds of times. Moreover, the improved method is effective to solve non-linear equations for which Newton's method does not converge owing to the problems of the quadratic derivative and inverse matrix.

通过大量的数值模拟试验发现，在非线性规划理论的指导下采用间插步骤和不精确的一维搜索技术改进的共轭梯度法，是基于梯度和共轭方向的连续搜索算法中最有效的算法，这种算法使BP网络的训练速度提高几十到几百倍，使BP网络的实际应用效果大为改善；而且这种算法对于用牛顿法由于求二阶导数和求逆矩阵等问题难于收敛的非线性方程组的求解也是很有效的。

In this paper, we researches the sum of U- relative deficiency of meromorphic functions, which generalize .

本文我们主要研究亚纯函数导数的U相对亏量和，得到一些推广结果。

In general, experience has shown that third-to fifth-degree polynomials produce sufficiently low residuals and monotonically increasing derivatives

实践证明，三至五次多项式就能产生足够小的残差和单调递增的导数。

In 1999, Struijk found that the myelinated nerve could be excited by transverse field induced by pulsed magnetic stimulation without the effect of tissue unhomogeneities and bends in the nerves.

因此，在近几年的神经磁刺激研究中，也局限于讨论感应电场纵向分量的作用，以纵向场负的一阶导数极大值作为刺激方式的选取及线圈改进的衡量标准。

In this report, the author analyzes the impacts of that error, discuss on remedy for exact derivative-free noncircular fan-beam reconstruction, and pose some open questions.

在本文中，作者分析了该错误的影响，讨论了用于非圆轨迹不含导数的精确扇束重建的矫正办法，并提出了一些未解决问题。

In Chapter 3,we derive the second-order-derivative-free iterations with two parameters from the third-order iterations with one parameter to approximate the roots of nondifferentiable equations in Banach space.

第三章，从带一个参数的三阶迭代族出发，构造了一族免二阶导数计值带两个参数的迭代族，用其去逼近Banach空间中非线性算子方程的解。

In this paper, a nounal test with table L9(34) has been ed for a new type of flap rudder s, and put forward some regression formulae of hydrodynamic performance,such as rudder normal force derivahve fa, the critical angle of attack ah and rudder nounal force coefficient CN, these formulae had been validated by the flap rudder in 9000t cement - carrier ship.

本文通过对新型襟翼舵舵模的L9（34）正交试验研究，给出一套包括襟翼舵法向力导数fα、临界攻角α和法向力系数CN的回归公式，并经9000吨自卸式水泥船新型襟翼舵舵力试验验证，表明计算公式对同类型的襟翼舵是完全适用的。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。