derivate

The design and processing based on mathematical equations deduction of spiral surface, which is a representative of complex surface, is utilized for a long time. But the method based on mathematical equations is difficult to use because of the complexity to derivate and calculate the equations.

螺旋面作为复杂型面的代表，它在设计与加工方面的研究，长期以来基本是以数学公式推导为基础进行的。

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As the derivate of currency, counterfeit currency appeared with the birth of currency.

作为货币的衍生物，假币自货币诞生伊始便一直伴随货币而出现。

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In order to calculate the intensity of general-stress in tri-axis test in geotechnical investigation, the author uses cartesian geometry principle to derivate calculation functions of common tangent points coordinates of every circle by the common tangent line. Especially, the slope tangent line is calculated directly.

工程勘察三轴试验的总应力强度指标的计算，运用解析几何原理导出任意两个应力圆公切线切点坐标计算公式，尤其是直接计算切线斜率。

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Week 6 The derivative of implicit function. the function's derivate by parameter equation.

第6周隐函数的导数. 由参数方程所确定的函数的倒数.数学实验一. 二.

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the paper introduces the property theorem about roots of polynomial and the derivate limit theorem, by which we can study the derived number of a break point of piecewise function.

介绍了用多项式根的性质与导数极限定理求分段函数在分界点的导数的简单方法。

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Research of antiviral mechanisms of action of berberine derivate HB-13 against herpes simplex virus type 2

小檗碱衍生物HB-13抗单纯疱疹病毒-2作用机制的研究

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a simple method to derivate piecewise function at the boundary point

分段函数在分界点求导的一种简单的方法

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the derivate of the function with finite limit at the infinite point

在无穷远处有有穷极限的函数的导数

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Synthesis and Application of the Derivate of β-cyclodextrin with Oligomeric Easters

低聚酯类β-环糊精衍生物的合成及应用

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Based on grey function and grey limit, this paper gives definition to derivate of grey function ( or to grey derivate) and studies the derivate of simple grey function.

本文在灰函数和灰极限的基础上，给出了灰函数的导数（或灰导数）的定义，并研究了简单灰函数导数。

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Then, the principle of virtual work is used to derivate the equilibrium condition of CM.

在以上基础上, 应用虚功原理,推导出柔性机械稳态的条件.

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Give examples to show that the derivate of elementary function may be unelementary function.

给出实例说明初等函数的导数可以是非初等函数.

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CONCLUSION Caffeoyl derivate and breviscapine are both active constituents E . breviscapus for cardiocerebral and optic desease.

结论咖啡酰衍生物和灯盏花素都是灯盏细辛注射液治疗心脑血管和眼科疾病的有效成分.

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Study on Preparation and Antifouling Application of a Novel Polymer Containing a Indole Derivate

含新型吲哚衍生结构聚合物的制备及海洋防污应用研究

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The main component of black hair dye is PPD, multicolor hair dyes are composed of derivate of PPD and other chemical constituent.

黑色染发剂是以对苯二胺（PPD）为主要成分的，彩色染发剂也都是有对苯二胺的衍生物与其他化学成分不同配比而成的。

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