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1·And I can take now the first derivative of this.

现在得到第一个推导式。

2·That's the first derivative of the position versus time.

它就是位置，对时间的一阶导数。

3·Methods First derivative spectrophotometry was used.

方法一阶导数分光光度法。

4·Method: First derivative spectrophotometry was used.

方法：用一阶导数光谱法测定。

5·Approximate Gaussian pulse is calculated and drawn 15 of the first derivative function of ESD.

近似计算并画出高斯脉冲的前15阶导函数的ESD。

6·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。

7·OBJECTIVE a method of first derivative UV spectrophotometry for growth hormone in PLGA microspheres was described.

目的建立一种一阶导数紫外分光光度法测定plga微球内生长激素含量的方法。

8·The gradient method detects the edges by looking for the maximum and minimum in the first derivative of the image.

梯度法检测边缘通过寻找最大和最小的图像一阶导数。

9·Using a compressibility coordinate transformation, a set of the first derivative differential equations has been derived.

采用了压缩性的坐标变换后，推导得到了五个一阶导数的微分方程组。

10·And the phase information, which is proportional to the first derivative of phase distribution, can be obtained from the fringes.

条纹的强度的相位分布同物体相位的一阶微成正比，所以称为微分相衬。