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- Generalized Second Derivative Method and Boundedness for Impulsive Differential Systems with Delay 广义二阶导数方法与具有时滞的脉冲微分系统的有界性
- A Accuracy investigation of second derivative method to determine an end point of weak acid-Bases potentiometric titration 二级微商法确定弱酸碱电位滴定终点准确度的分析
- second derivative method 二级微商法
- The determination of clobetasol propionate by the method of second derivative linear sweep adsorptive stripping voltammetry was reported. 本文报道了丙酸氯倍他索的二次导数线性扫描吸附溶出伏安法测定。
- This paper describes a sensitive method for the determination of trace estrogen and androgen by second derivative convolution voltammetry. 二阶导数卷积伏安法应用于水稻中痕量雌雄激素的检测，具有快速、灵敏、干扰少的特点。
- Based on the fourth-order difference formula of the second derivative term, a fourth-order finite difference method is developed for solving two-points boundary value problem. 摘要从中心差分公式出发，利用二阶微分的四阶差分公式，对两点边值问题得到了一种四阶精度的差分格式。
- A sansitive method of determination for VRT by second derivative convolution voltammetry was developed. The method was applied for the determination of VRT in injection and urine with satisfactory results. 建立了二阶导数卷积伏安法测定的新方法 ,并将此法应用于维脑路通注射液及模拟尿样中维脑路通的测定。
- Absorbance ratio derivative method was developed for the simultaneous determination of glyoxal(GLY) and glyoxylic acid(AGLY). 利用比值导数波谱法同时检测乙二醛(GLY)和乙醛酸(AGLY),为GLY催化氧化过程的实时、快速分析提供了新的手段。
- The function (f')is usually written simply f" and is called the second derivative. 函数（f’）通常简写成f”，并称之为f的二阶导数。
- Because of the complexity and high order nonlinear property of the criterion, a derivative method for compound function is used to get reliability. 由于准则方程的高次非线性和复杂性，文中利用复合函数求导法则，直接针对基本随机变量求解。
- The second derivative of LNA, DHA is the most prevalent fat in the brain and nervous system. DHA是由LNA转化的另一种衍生物，人体脑部和神经系统都含大量DHA。
- Quinestrol in compound preparation was determined directly by using second derivative spe ctrometry. 采用二阶导数分光光度法对炔诺孕酮炔雌醚片中炔雌醚的含量进行了测定；
- Be able to apply the first and second derivative tests to analyze the monotonicity and concavity of a function. 能应用导数判定函数的单调性与凹性并利用渐近线协助绘制函数图形。
- Derivative method has been widely used for resolving overlapped spectra,but the noise level increases apparently in higher order derivative calculation. 导数法广泛应用于重叠峰分辨,但信噪比会随着导数阶数的增加而降低。
- For using, the effect of metal ion preserving green method is well, but the food's, safety is not very sure, and the effect of chlorophyl derivative method is also v... 而改用叶绿素衍生物染色技术效果也很理想并且其食品安全已被认可因此这种方法已成为目前护色时常选用的安全有效方法。
- Refers to all derivation methods. 引用所有派生方法。
- The computation precision can be enhanced with the consideration of second deriv ative. 计算结果表明，考虑二阶导数的影响，可以提高计算精度。
- In this paper, an inverse eigen derivative method (IEDM) for dynamic modification of mechanical structures is formulated for improving the eigen derivative method(EDM). 本文针对机械结构动力修改的特征导数法（EDM）所存在的问题，提出逆特征导数法（IEDM）。
- It is computationally expensive and impossible to use optimization means which should compute gradient and Hesse matrix,and the second derivative. 涉及到的求导计算太繁琐,并且需要计算目标函数的二阶导数,所以对这类问题采用含计算梯度或海森矩阵的优化方法是不可行的。
- The second derivative can partly remove the influence of backgrounds, but it is also limited by the anisotropy of canopy reflectance. 二阶微分方法虽然能部分消除土壤背景的影响，但受冠层反射率非各向同性的限制。
