拐点

On the forepart of the vortex, the fluid rotates adown and changes the speed type of ground, the inflexion whose position falls continuously appears, the sweep appears, and the inflexion is below the sweep.

其前部向下旋转的流体会造成当地速度型改变，形成拐点并导致拐点位置不断下降，出现下掠运动现象，速度型的拐点在下掠运动的下方。

From the "inflection point theory" started by Wang began to frequent CCTV, blog and other media out of the house one after another pessimistic argument:"Now the middle class already can not afford to buy a room,""suggest to you three or four years after buy a house "," inflection point now is that house prices baldhead head lice."

从"拐点论"开始，王石开始频繁地通过央视、博客以及其他媒体对房价接二连三地抛出悲观论点："现在中产阶层已经买不起房了"、"建议大家三四年之后再买房"、"现在房价拐点就是秃子头上的虱子"。

Thoseinflexion are brought by the energy balance and heating mechanism in stellar chromosphere and corona.

og尸为1.75附近出现拐点。这些拐点的出现可能是演化恒星的色球、冕球的能量平衡和加热机制引起的。

This paper points out the insufficient definition in some textbooks and also proves non coincidence of the yieding point and extreme point.

但有的教材并非如此，本文指出了教材中对拐点的不充分定义，并证明了拐点与极值点的不重合

Arrehius Plot of equilibrium DHFR has a discontinuity of slope, and in low concentrations of denaturant, the discontinuity disappeared.

该酶的ArrehiusPlot有一个拐点，但在低浓度变性剂存在下，拐点消失。

The relation among inflexion point, extreme value point and undifferentiable point is investigated by contrasting their sufficient conditions.

给出了曲线拐点判定的几个充分条件，对比曲线的拐点和极值的判别方法，研究了曲线的拐点、极值点和不可导点之间的关系。

The same operations are performed iteratively until the smallest interior angle in all the curves is larger than the given threshold value.

该算法首先找到笔画的拐点(最小内角值小于指定阈值)，然后分别寻找拐点两侧曲线段上的拐点，反复执行，直到再也找不到拐点为止。

Hence the study of geometric properties, which include the distribution of singular and inflection points and the convexity of parametric curves, is the key for designer to control the curves shape.

在计算机辅助几何设计的光顺曲线造型中，不希望曲线带有二重结点、尖点及多余拐点，因此对参数曲线的几何性质(包括奇、拐点分布及凸性等)的研究是控制其曲线形状的关键。

Once the sparger installed in the CMT, the fluid temperature above the sparger and the initial pressure of pressurizer are the key factor, which affect the condensation characteristic and temperature equilibrium time.

通过对不同初始条件下的CMT排水量进行了分析，发现CMT排水速度主要受CMT内的压力变化的影响：CMT无遮流板排水实验中所有排水量随时间的变化曲线都是单调递增的，且都有一个较为明显的拐点，在拐点后，斜率明显增大，说明排水速度增加显著；CMT加遮流板排水实验中排水量曲线的拐点不明显且出现时间较无遮流板排水实验要早，说明排水速度增加得较早；CMT加遮流板排水实验如果PRZ初始压力较大，通过改变CMT的初始温度，将会引起排水总量较大的变化；排水速度平衡时间受CMT压力平衡响应时间的影响，且较CMT压力平衡响应时间快。

This paper discusses singularities, inflection points and convexity of FB-spline curves in terms of their control polygons, and gives the necessary and sufficient conditions for testing when FB-spline curves have one or two inflection points, or a cusp, or a loop, or none of the above points by the envelope theory and the topological mapping method.

文章利用包络理论和拓扑映射的方法，讨论了FB-样条曲线的奇拐点和曲线性质，并给出了依据控制多边形判断FB-样条曲线出现1个或2个拐点、1个尖点、1个二重点以及处处为凸的充分必要条件；最后给出了FB-样条曲线的奇点、拐点以及二重点在λ-μ平面上的分布图。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。