differential of pressure curve

The conception of curve-differential is put forward from actual problems.

根据实际问题,提出了曲线导数的概念,使得方向导成为曲线导数的特殊情形,并给出了曲线导数存在的充分条件,同时给出了曲线导数的基本性质。

Study on the evaluation method of waterflooding derivative curve;

水驱导数曲线评价方法研究

Characteristics of pressure curve in fractured reservoirs of Hailaer Basin;

海拉尔盆地裂缝性储集层压力曲线特征分析

In the patient group,the left ventriculography(in right oblique 30 degree) and the pressure curve in left ventricle and aorta were recordered continuously before.

目的在介入诊疗时,利用左室压力曲线描记和左室造影的方法评价冠心病介入治疗前后左心室功能变化。

However,the middle and late period of the pressure derivative curve is quite discrete by the direct well test data,which causes considerable difficulties of the interpretation.

但从实际应用情况来看,直接应用测试数据进行解释做出的压力导数曲线的中后期相当离散,从而对解释造成了相当大的困难。

An advanced algorithm to pressure derivative of discrete points is presented.

将Laplace正变换积分数值离散 ,再结合Stehfest数值反演 ,给出了一种改进的离散点压力导数计算方法。

The calculated pressure data are analyzed by log-log analysis of pressure derivative,and the pressure derivative type curves for swabbing well in different heterogeneous oil reservoirs under the condition of constant flow rate are obtained.

对求解压力进行压力及其导数双对数分析,得到了不同平面非均质油藏抽汲井定产量生产压力导数典型曲线。

The Derivative Domain Codes of Pitch Curse and Applications

基于RFC模型的基频曲线导数域编码方法研究

Research on Curved Path Real-time Interpolator with Feedrate Guide Curves

基于进给速度引导曲线的参数曲线实时插补器

Mathematic Deduction of the Properties of NURBS Curves at the Beginpoint and the Endpoint;

NURBS曲线端点性质的数学推导

Pressure Derivative Type Curves of Swabbing Well in Heterogeneous Oil Reservoir

非均质油藏抽汲井压力导数典型曲线

Denoising method applied to electrical derivative data of semiconductor laser diode

用于半导体激光器电导数曲线的降噪方法

Differential Calculus: limits and continuity; derivatives; techniques of differentiation; mean value theorem; higher derivatives; maxima and minima; curve sketching.

微分学：极限与(数的)续性、导、微分的方法、值定理、阶导数、值、绘曲线。

Study On The Site Index Guiding Curve Model Of Larch Plantation

落叶松人工林地位指数级导向曲线模型的研究

Hausdorff Dimension of Koch Curve;

Koch曲线的Hausdorff维数

hyperbolic navigation grid

双曲线导航座标网格

hyperbolic electronic navigation system

双曲线电子导航系统

long range navigatio

脉冲时差双曲线导航仪

semiconductor curve tracer

半导体特性曲线图示仪

Harvard ABC curve

(三项指数曲线) 哈佛ABC曲线

a constant in the equation of a curve that can be varied to yield a family of similar curves.

曲线方程式中决定相似曲线族的常数。

Meanwhile, it also points out that the methods of derivative can be more extentively applied in the research on tangent of the curve, which proves the important thought of the combination of figure and chart.

同时导数方法在研究曲线的切线方面更有广泛的应用,也体现了数形结合的重要思想。

percentage production decline curve

开采量递减百分数曲线

NC optical profile grinding machine

数控光学工具曲线磨床

curve of tons per inch immersion

每英寸吃水吨数曲线