first derivative

美 [fɜːrst dɪˈrɪvətɪv]英 [fɜːst dɪˈrɪvətɪv]
  • 一阶导数
first derivativefirst derivative

noun

1
the result of mathematical differentiation;the instantaneous change of one quantity relative to another;df(x)/dx
Synonym: derived function derivative differential coefficient differential

数据来源:WordNet

  1. Identification of spillage oil at sea with first derivative fluorescence spectra was discussed .

    一阶导数荧光光谱鉴别海面溢油,其光谱特征用模糊数学方法作了分析;计算了各种油之间的模糊相似程度;

  2. Slick merge arithmetic between front or back surface and flank surface was deduced on the basis of boundary conditions including the surface shared the same boundary where the first derivative was continuous .

    根据叶片的前后表面和侧面间拼接时具有共同边界和在边界上一阶导数连续等边界条件,实现两曲面的光滑连接。

  3. And I can take now the first derivative of this .

    现在得到第一个推导式。

  4. That 's the first derivative of the position versus time .

    它就是位置,对时间的一阶导数。

  5. That 's the first derivative of that position here .

    是这里的,一阶导数。

  6. Study on the First Derivative Stop - Flow Method to Determine Reduced Glutathione

    一阶导数停流法测定还原型谷胱甘肽的方法研究

  7. And that is a point where the first derivative is zero .

    这点的导数为零。

  8. The computation and application of vertical first derivative of gravity

    重力垂直一次导数的计算及应用

  9. Methods : First derivative spectrophotometry was used .

    方法:一阶导数分光光度法。

  10. Determination of magnesium in drinking water by the first derivative spectrophotometry

    一阶导数吸光光度法直接测定饮用水中镁

  11. On integral factor approach for first derivative differential equation

    关于一阶方程的积分因子法

  12. Method : To apply first derivative spectral .

    方法:采用一阶导数光谱法测定本制剂中丹皮酚的含量。

  13. So the slope of the guess is the first derivative .

    因此斜率等于此处的一阶导数。

  14. The first derivative of their regard for us is positive . Okay ?

    他们对我们态度的转变首先是积极的,,对吧?

  15. Determination of Iron in Drinking Water and Medicine by First Derivative Stop-flow Method

    一阶导数停流法测定药物和饮用水中的铁

  16. Direct Determination of Ammonium Nitrogen in Refinery Wastewater by First Derivative Spectrophotometry

    一阶导数分光光度法直接测定炼油厂污水中的氨氮

  17. Continuity on First Derivative of Wave Function

    关于波函数一阶导数的连续性

  18. Ant Colony Algorithm in Chemistry and Its Application in First Derivative Fluorescent Spectra Analyzing

    铽亚砜配合物的光致发光化学蚁群算法与多组分导数荧光光谱解析

  19. Simultaneous Determination of Five Synthetic Food Colorants by the First Derivative Spectrophotometry

    导数光度法同时测定五种食用合成色素

  20. Determination of Diazepam in Blood by UV First Derivative Spectroscopy

    紫外一阶导数光谱法测定安定血药浓度

  21. METHODS : The method of first derivative UV spectrum was established and compared with HPLC assay .

    方法:采用一阶导数紫外光谱法,并与高效液相色谱法(HPLC)进行了比较。

  22. Extraction of baseline of chromatography based on histogram of first derivative HPLC and neural networks

    基于导数直方图和神经网络的色谱基线提取算法

  23. Clinical Observation on pulmonary Rheogram and its First Derivative in Silicosis

    矽肺患者肺阻抗图及其一阶微分图的临床观察

  24. The algorithm only calculated the first derivative , significantly reduced the computation and had a good convergence .

    并且该算法只需要计算一阶导数,极大地减少了计算量,且收敛性较好。

  25. The manual first derivative spectrophotometric determination of sodium benzoate and caffeine injection

    手动式一阶导数光谱法测定安钠咖注射液组分含量

  26. Analysis of oxytetracycline and its preparations by the first derivative differential pulse polarography

    一阶导数差示脉冲极谱法分析土霉素及其制剂

  27. Determination of paeonol of Eczema Spray by first derivative spectral

    一阶导数光谱法测定湿疹喷雾剂中丹皮酚的含量

  28. The first derivative ratio spectrometry was used for the determination of the procaine hydrochloride injection .

    盐酸普鲁卡因注射液是临床常用的局麻药。

  29. The 2D series expansion algorithm of vertical first derivative of gravity is briefly stated in this paper .

    本文介绍了二度空间重力垂直一次导数的级数展开计算法。

  30. The first derivative is more important than just the position of their regard for us , getting better and better .

    态度的改观,比一开始对我们的看法更为重要,会越来越好。