查询词典 derivative

The derivative of a function can be interpreted either as a function whose value at x is equal to the gradient of the tangent line to the graph of y=f at x, or, alternatively, as a function that describes the instantaneous rate of change of y with respect to x at the point x.

一个函数的导数可以理解为一个函数的值无论是在x是等于切线的梯度的y图二F在x，或者，或者，作为一个函数描述瞬时速度y的变化的关于x的点x在f关于x的也可以表示为导数

The algorithm of the static voltage stability region s tangent plane through the characteristic vector method or the implicit function derivative method is presented in the total parameter space,which can provide quantitatively the influence degree of all kinds of parameters on the voltage stability region.

提出了基于全参数空间的静态电压稳定域的2种切平面计算方法：特征向量法和隐函数求导法。

More Than $20 Million Securities Class Action and Derivative Litigation Settlement by Taser International, Inc.

2000多万美元的证券集体诉讼和派生诉讼解决的优先认国际公司

Taylor formula for the basic idea is to use polynomials to approximate a known function, and the coefficients of the polynomial by the given function to determine the derivative , and this approach gives an effective estimate.

泰勒公式的基本思想是用多项式来逼近一个已知函数，而这个多项式的系数由给定函数的各阶导数确定，并对这种逼近给出有效地估计。

On period " golden hill business management " the magazine published from " digging pit filling " the by-talk article that speaks of, from a 3 people working party, one person digging pit, telegraph pole of one person erect, one person filling, that person of inopportune erect telegraph pole because reason absent, and the person of filling of those two digging pit is illuminated dry a jest that do not deduce by accident are derivative be short of the impressions that break to business management target.

梗概： 上期《金山企业管理》杂志刊登了一篇从"挖坑填土"说起的杂谈文章，从一个三人工作小组，一人挖坑，一人架设电线杆，一人填土，不巧架设电线杆的那个人因故缺席，而那两个挖坑填土的人照干不误所演绎出的一则笑话引出对企业管理目标缺失的感想。

The thermolysis of the [K3·(H2O)2] n has been investigated by using differential scanning calorimetry and thermogravimetry-derivative thermogravimetry at a heating rate of 10 ℃/min.

在10℃/min 的升温速率下用DSC和TG-DTG进行了热分解实验。

One new hydroxypropyl hydroxyethyl starch derivative with fine thermoplasticity ,of which glass temperature T g≈140℃ and flow temperature T f≈170℃,was prepared when corn starch was properly coupled with epichlorohydrin then hydroxypropylated and hydroxyethylated in high substitution values.

以淀粉衍生物作为添加剂与非降解性塑料等复合制备可降解材料时，淀粉衍生物的热塑性是一项非常重要的指标。

Efficacy: TTFD is an open thiazolium ring disulfide derivative of thiamin.

功效： TTFD 是一种开放式噻唑基环形二硫化衍生物。

Besides, the derivatives were synthesized successfully by the similar acid binding agent system, such as tris(4-nitrophenyl) thiophosphate, tris(4-toluene)thiophosphate. The derivative of maleic anhydride was synthesized by the simple method, and its yield was above 90%.

采用类似的缚酸剂体系成功地合成了硫代磷酸三(4-硝基苯)酯、硫代磷酸三(4-甲基苯)酯，并用简单的方法合成了硫代磷酸三(4-氨基苯)酯的马来酸酐衍生物——硫代磷酸三(4-马来酸氨基苯)酯，产率达90％以上。

It is proved by using the function approximation theory and martrix theory that for a degenerate elliptic equation of the first class, if the third boundary value condition is satisfied at its nondegenerate boundary and the given derivative values are satisfied at its degenerate boundary, then its solution is existent and unique.

摘 要 运用逼近理论及矩阵理论证明：如果一类退化椭圆型方程在非退化边界上满足第三边界条件，在退化边界上满足给定微商值，那么它的解是存在且唯一的。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。