convex curve

Case study indicates that for a gas well with constant production rate, the relationship between the time of water breakthrough and the perforating degree assumes asymmetrical convex curve.

实例分析表明，底水气藏的一口生产井以定产量生产，在其它条件不变的情况下，其见水时间与气藏打开程度呈不对称凸型曲线关系。

Direct measuring of the convex curve length

凸形曲线长度的直观度量

Geometrical Properties on Planar Parametric Local Convex Curve

平面参数局部凸曲线的几何性质

A circular arch with constant thickness in the horizontal section is defined and its crown contilever has an arbitrary convex curve on upstream face. Such as.

研究对象是水平截面为等厚园拱、拱冠上游面呈任意凸曲线的双曲拱坝。

Divide the erosion failure surface into four different types: linear, Convex curve, upward Concave arc and downward concave arc.

将破坏面形态划分为直线型、凸弧型、上凹弧型、下凹弧型共四种类型。

In this paper, a new methodology was proposed based on the connected convex curve searching and ellipse fitting.

本文提出一种基于凸性连通分支搜索结合曲线拟合的多椭圆检测算法。

Application of Support Function of Convex Curve in the Vessel Cross-sectional Reconstruction

卵形线支撑函数在血管截面重建中的应用