它就是位置，对时间的一阶导数。
方法：用一阶导数光谱法测定。
方法：采用一阶导数分光光度法。
METHODS: The first order derivative spectrophotometry was used.
方法一阶导数分光光度法。
方法用一阶导数光谱法半振幅进行定量。
Methods a first order derivate spectrophotometer was selected to determine the content.
用一阶导数光谱法测定足叶乙甙注射液的含量。
The content of etoposide injection was determined by first order derivative spectrophotometry.
方法：采用一阶导数分光光度法进行含量测定。
Method: The content of fluconazole in gel was measured by first order derivative spectrophotometry.
梯度法检测边缘通过寻找最大和最小的图像一阶导数。
The gradient method detects the edges by looking for the maximum and minimum in the first derivative of the image.
当我们这样做时就得到了结果，因为在这些例子中，一阶导数是熵。
And what's fallen out when we do that, because in each case, one of the first derivatives gives us the entropy.
然后得到拟三次插值格式，这一格式只用到两个一阶导数值。
And then, the quasi-cubic interpolation format has been put out, only with two of the first derivatives concerned.
本文提出了凹型压力恢复曲线的一阶导数图版和二阶导数图版。
The first and second derivative plates of concave pressure build-up curve are presented in this paper.
本文采用一阶导数紫外分光光度法直接测定注射用苯妥英钠的含量。
The Content of phenytoin sodium (for injection) was determined directly by the first order derivative spectrophotometry.
采用一阶导数方法对光谱进行预处理；利用偏最小二乘法建立模型。
The original spectrum is processed by using first derivative, and applying Partial Least-Squares method to set up linear mathematical model.
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。
Using a compressibility coordinate transformation, a set of the first derivative differential equations has been derived.
建立用一阶导数单扫描极谱法测定食品中凯氏氮含量的简单、快速的方法。
Objective: To establish a simple rapid method for determining Kjeldahl nitrogen content by 1st order differential coefficient single sweep polarography.
因此加热前后样品反射光谱一阶导数的变化取决于针铁矿和赤铁矿的含量。
The degree of thermal change induced in a sample depends on the concentrations of both Gt and Hm.
方法：以水为溶媒用一阶导数光谱法测定盐酸哌甲酯片的含量及含量均匀度。
Methods: the first derivation spectrophotometry method was used to determine the content and content uniformity of methylphenidate hydrochloride tablets with the solvent of water.
对于一阶导数间断的物理量——气膜厚度采用高精度保凸性磨光法进行处理。
Smoothest approximation method, with high precision and capacity of keeping concave and convex feature of original outlines, is used to deal with the derivative discontinuity of gas film thickness.
有必要对加速度给出一个严格的定义，加速度,作为一个矢量,是速度的一阶导数。
So, the definition will take effect. The acceleration is as a vector, and the acceleration vector is just the derivative of a velocity vector.
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。
OBJECTIVE a method of first derivative UV spectrophotometry for growth hormone in PLGA microspheres was described.
为了提高尺寸预测的准确性，将实际磨削尺寸的一阶导数和二阶导数做为网络的输入。
The first and the second derivative of the actual amount removed from the workpiece were added into the network input to improve the prediction accuracy.
将系统的总势能对相对剪切变形求一阶导数（等于零），得到了弹性岩石的平衡条件。
The first-order derivative equal to zero of total potential energy with respect to the relative shear deformation of shear band leads to the equilibrium condition of elastic rock.
引入状态空间方法，以三个位移分量及位移分量的一阶导数为状态变量，建立状态方程。
The state equation were established based on the governing equations, in which the displacement components and their first derivatives were chosen as state variables.
对光学系统输出刀口像的一阶导数做傅里叶变换，可以得到该系统的光学传递函数（OTF）。
The OTF (Optical Transfer Function) of an optical system can be evaluated by the Fourier Transform of the first derivative of the optical image of an knife-edge (object).
与常用的拉格朗日插值方法相比，改进后的公式不仅一阶导数形式简单，而且计算量也小得多。
The improved formula not only has the more simple form for the derivation of the function, but also much less computer time than the Lagrange method.
方法：采用一阶导数分光光度法和双波长光谱法测定各配伍液中头孢噻肟钠和西咪替丁的含量。
METHODS: to test the contents of cefotaxime sodium and cimetidine in all kinds of infusions using first order derivative and double wavelength spectrophotometry.
通过分析函数的一阶导数与二阶导数图像的特征，提出了一种含有权值的图像边缘锐化的新算法。
By analyzing the characteristics of the function's once and quadratic differential coefficient's image, a new algorithm of images' edge sharpening which contains weights.
使用阿斯匹林粉末药品的近红外漫反射一阶导数光谱数据建立人工神经网络模型，预测未知样品。
A real data set from near infrared reflectance spectra of aspirin used to build up artificial network to predict unknown samples.
采用一阶导数分光光度法测定复方滴耳液中诺氟沙星的含量，样品不须分离，方法简便，结果满意。
The determination of norfloxacin in compound norfloxacin ear drops by first order derivative UV spectrophotometry needed no separation and was simple, rapid, and accurate.
采用一阶导数分光光度法测定复方滴耳液中诺氟沙星的含量，样品不须分离，方法简便，结果满意。
The determination of norfloxacin in compound norfloxacin ear drops by first order derivative UV spectrophotometry needed no separation and was simple, rapid, and accurate.
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