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.

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。

Direct measuring of the convex curve length

凸形曲线长度的直观度量

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

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。

A Novel Fabrication of in-Plane Silicon Microneedles Using Structure of Convex Corner in ( 110) Si-Wafer

用（110）硅面各向异性腐蚀的凸角结构制作微米针管

This paper presents a novel compensation technology for the ( 100) silicon convex corner under-cutting with 100 direction masks.

本文首次研究了（100）硅的、边沿＜100＞方向掩膜的各向异性腐蚀凸角削角补偿技术，成功地解决了上述问题。

Compensation technique for < 100> convex corner undercutting in KOH anisotropic etching of silicon and its application

硅KOH腐蚀<100>晶向凸角补偿技术及应用

Convex Corner Undercutting and Compensation in Si ( 100) Wafer

硅（100）晶面的凸角腐蚀及其补偿

On the Convex Corner Etching of Silicon Mesa Structure

硅台面结构凸角腐蚀原因探析

Analysis of transonic flow past an axisymmetric convex corner

轴对称跨声速绕流的凸角流动分析

The influence of the angle of convex corner on the effect of detonation waves

拐角角度对爆轰波拐角效应的影响

Design of Production Line Grinding Head of Convex Polished Terrace Tile

凸形抛光梯级砖生产线磨头设计

To the large convex surface the traditional testing method is using the back testing.

对于大口径的凸非球面，传统的检测方法是使用背部检验。

A new idea about testing the large convex surface

大口径凸非球面零件检测的新思路

A method of calculating external heat fluxes on arbitrary shaped convex surface of spacecraft

空间任意形状凸面的轨道空间外热流计算方法

By the method of matrix optics, the waist width and imaging distance of Gauss beam through the self-focusing micro lens system and the double plan convex lens coupling system are deduced.

利用矩阵光学方法，分别推导了高斯光束经双平凸镜耦合简和自聚焦微透镜两种耦合系统聚焦后的束腰宽度和像距的计算公式。

Talking about Structure Broadening Methods of Double-convex Arch Bridge

浅述双曲拱桥结构拓宽方法

But because of switched reluctance motor ( SRM) double convex type structure make motor in turns easy to produce great torque ripple and noise.

但由于开关磁阻电机（SRM）的双凸式结构使电机在转动时易产生极大转矩脉动、噪声。