反之满足这一条件的点所构成的二阶曲线一定是椭圆。
On the other hand, the curve of second order composed with those points accord with above-mentioned factor is sure to an ellipse.
另外，利用顶点位置的调整，给出一条降阶曲线逼近原曲线的方法，同时考虑了它们的误差。
On the other hand, by adjusting the given vertices, an approximation method for degree reduction of bezier curve is presented and the error is estimated.
陈保亚提出的阶曲线理论为语言历史关系研究提供了两个重要的方法：概率计算法和阶曲线。
The Curve Theory of Ranks (CTR) proposed by Dr. Chen Baoya suggests two methods for the research in the field of historic relationships of languages: Probability Limit(PL) and the Curve of Ranks (CR).
然后，再将非退化二阶曲线到自身的双射为对合的充要条件推广到退化二阶曲线两相异点列的情形。
Then, the latter necessary and sufficient condition is generalized to the case for the two different point ranges of degenerate second order curve.
另外 ，利用顶点位置的调整 ，给出一条降阶曲线逼近原曲线的方法 ，同时考虑了它们的误差 。
On the other hand, by adjusting the given vertices, an approximation method for degree reduction of Bézier curve is presented and the error is estimated.
通用模型控制(CMC)算法的参考轨迹是一条标准的二阶曲线，该控制器的参数具有明显的物理意义，控制器参数整定方便。
The reference trajectory of common model control (CMC) scheme is a classic second order curve. The parameters of CMC are of very explicit physic meaning and it is very easy to tune for the controller.
以无穷远直线为基础讨论二阶曲线的中心、直径、渐近线等几个仿射概念，并联系解析几何中的有关性质，深入讨论它们之间的一致性。
Based on the infinitely straight line, this thesis discusses the concepts of curve of second orders center, diameter, advance gradually in the line.
当它是曲线的时候，其弯曲的法则看起来至少是一阶至多是二阶。
When it is curved, the law of its curvature seems to be at the least of the first and at the most of the second order.
接着我调整对比度和色阶，曲线和色彩平衡度。
Then I adjust contrast and Temperature with levels, curves and color balance.
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。
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.
拐点是制动曲线的三阶导数，它的物理意义和冲动不谋而合，这也是本文在防滑器控制模型中引入冲动物理量的原因之一。
The inflexion is the second differential of the speed curve and the physical meaning is the same to the jerk, so the jerk is introduced into the control model of anti-skid system.
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。
The first and second derivative plates of concave pressure build-up curve are presented in this paper.
这类椭圆曲线可用于密码技术中各种合数阶群的情形。
This kind of elliptic curve can be used for various situations where composite order groups are needed.
采用多段样条方法提取阻力系数，可以保证阻力曲线的一阶连续性，且能准确地辨识出从亚音速到超音速下的阻力系数。
The multivariate splines were adopted to identify the drag coefficient from subsonic to supersonic, which can keep the curve smooth.
给出了同阶差分格式线性组合的性质，从而可设计出更多收敛的多参数曲线细分格式。
Furthermore, the property of the linear combination of the difference schemes of the same order is analyzed, which can help to devise more convergent curve subdivision schemes with several parameters.
这和调整色阶或曲线类似，但是会产生一点不同的效果。
It's similar to adjusting the levels or curves, but gives a slightly different look.
对于有转速脉冲信号的情况，实现了基于一阶数字微分和最小二乘五点三次平滑方法的转速曲线计算方法。
When the speed pulse signal is provided, a calculation of the speed curve is achieved using first order digital differential method and the lease square of five points three times smoothing approach.
其中AUMC是指一阶矩血浆浓度时间曲线下面积。
AUMC is the area under the first moment of the plasma concentration-time curve.
运用泰勒展开的一阶近似估计推导过定点的指数曲线的非线性直接估计公式。
Nonlinear directly estimating formula for exponential curve which, through fixed point, was derived, by using first order approximation of Taylor expansion.
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。
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.
介绍了椭圆曲线密码体制的数学基础，及其应用模型，并为计算椭圆曲线的阶提出了一个有效的算法。
This paper introduce the math basis of Elliptic curve cryptography, and it 's cryptosystems, then provide a valid method to compute the order of Elliptic curve.
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。
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.
通过现场实验数据，并利用最小二乘曲线拟合算法建立被控对象各通道之间的二阶系统模型。
Second: via experimental data we get the second-order system model for each control object by using least square curve simulation.
对现役钻机底座做了现场振动测试，得到频响函数曲线及前10阶模态频率。
On-site vibration test of the servicing rig substructure is made, and the frequency response function curve and preceding 10 modes frequency are obtained.
一般齿轮齿形曲线在一点邻域的高阶阶戴劳级数展开后，会发现齿面啮合点邻域间隙为2阶无穷小。
The common gear tooth profile curve launches after neighborhood higher order step taylor's series, can discover the tooth face meshing point neighborhood gap is 2 step infinitely greats.
讨论曲线上柯西型奇异积分利用三次复样条进行近似计算的误差估计，对于相关函数类给出了这类逼近的误差阶。
This paper discusses the estimation of approximation orders of singular integrals over a general curve by means of cubic complex spline.
对林分结构研究表明，不同发育阶段的林分林木直径分布呈左偏单峰山状曲线，林木株数随径阶变化可以分为四个阶段；
It was found out that the value of the stand DBH at the succession stages appeared to be inclined to left side mountain-liking curve.
本文导出了多径反馈型六阶有源带通滤波器电压转移函数，计算出了该滤波器幅频、相频理论特性曲线。
In this paper we develop the voltage transfer function of the six order active passband filter with multiple path feedback and calculate the theoretical values for A-F and P-F response.
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。
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。
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.
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