Actual example illustrates the applied method of pressure derivative curve rule.
通过实例说明了压力导数曲线准则的应用方法。
The second derivative curve of the gravity field can be used as filtering factor so as to improve resolution.
为了提高分辨率，可采用重力场的二次导数曲线作滤波因子。
According to the semi-logarithmic curve, pressure derivative curves of vugs initially increase and then decrease;
绘制出了溶洞压力导数半对数曲线和井底压力双对数曲线。
Firstly, using the first order derivative of Gaussian function as the base wavelet, the direction Angle function of a planar curve was analyzed on multiple scales to obtain the candidates of corners.
使用高斯函数的一阶导数作为基本小波，对曲线的方向角函数进行多尺度小波分析得到候选点集，提出了四个筛选规则对候选点集进行逐步筛选得到正确角点集。
The first and second derivative plates of concave pressure build-up curve are presented in this paper.
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。
A differential equation of the Jominy curves has been constructed according to the Jominy experimental data and the change of derivative of the Jominy curve.
根据端淬实验数据和实验曲线导数变化规律，用线性试探法建立了端淬曲线微分方程，然后解得硬度分布函数。
By using the statistic properties of the correlation coefficient, a curve correlation coefficient is calculated, and then the matching point is obtained through evaluating it's derivative function.
利用相关系数在真实匹配点附近的统计特性，通过对相关系数进行曲线拟合，根据其一阶导数确定最大相关系数所在的位置，快速得到亚像素匹配点。
In outline recognition, to reduce the misjudge result from calculated error of the core position, reference frame transform and second derivative of curve were adopted.
轮廓识别采用坐标变换及曲线求二阶导数，避免了果核位置判断误差造成的误判。
Practical divergent Angle is evaluated by the derivative of the standard wafer's grazing-exit X-ray fluorescence curve.
用标准晶片掠出射x射线荧光曲线的微分评测了实际角发散度的大小。
Aim To determine the measured profile of a wheel in railway vehicle. Methods So - called piecewise curve-fitting method of the third derivative continuity is employed.
目的拟合列车车轮踏面的实恻轮廓曲线，方法采用三阶导数连续的分段曲线拟合法。
In the second part, the deformation curvature, which is determined by second derivative of curve fitting of the deformation of the retaining structure, is proposed.
提出由曲线拟合围护墙变形，两次求导后得到变形曲率。
This paper discusses the relationship between the 1-stage progressive derivative and function convex, and two principles are presented, the curve convex judging principle is finally extended.
研究了函数的一阶右导数与函数凸性的关系，给出了二个定理，把曲线凸性判定定理加以推广。
The procedure used to define the derivative has a geometric interpretation which leads in a natural way to the idea of a tangent line to a curve.
微分的定义步骤有一个几何解释，最简单的观念就是一条曲线的切线。
The procedure used to define the derivative has a geometric interpretation which leads in a natural way to the idea of a tangent line to a curve.
微分的定义步骤有一个几何解释，最简单的观念就是一条曲线的切线。
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