查询词典 curves

For designing free curves, the continuity condition of twopiece curves is discussed.

为便于自由曲线的设计，还讨论了两段曲线的拼接条件。

For designing free curves, the continuity condition of the two-piece curves is discussed. Finally, some application examples of the curve in the curve design are presented.

为方便自由曲线的设计，还讨论了两段曲线的拼接条件，给出了该曲线在曲线设计中的实例应用。

In this paper,We define the notions of lightcone Gauss maps ,Hghtcone pedal curves and lightcone height function of a spacelike curve in Minkowski 4-space, and established the relationships between singularities of these objects and geometric invariants of curves under the action Lorentz group ,and as an applications of standard techniques of singularity theory classified singularities of a spacelike curve in this space .

在本文中我们定义了四维Minkowski空间内类空曲线的光锥高斯映射，光锥垂足曲线，光锥高度函数的概念，建立了这些对象的奇点与在洛仑兹群作用下曲线的几何不变量之间的关系，并且运用奇点理论的标准工具对该空间中类空曲线的奇点进行分类。

This study consists of three parts. Firstly the equivalently accelerative corrosive environment is determined through the analysis of statistic data of corrosion environment. Secondly the fatigue test is carried out under the constant amplitude cyclic loading for the specimens which are exposed in the corrosive environment for equivalent calendar time of zero year, 3 years, 8 years and 13 years. Four S-N curves with different corrosive time are obtained based on the fatigue experiment. Finally the regression method of S-N curves for experimental data is researched and a weighted least square fit is put forward in which the weigh of a group of test data is inversely proportional to the length of the confidence interval.

进行了以下几个方面的工作：(1)通过实测、统计、分析得到了当量加速环境谱；(2)完成了在当量加速环境谱下预腐蚀日历年限0年、3年、8年和13年的腐蚀试验，并进行了成组常幅疲劳试验，得到了不同预腐蚀年限下的S-N曲线；(3)进行预腐蚀后的S-N曲线的数据拟合方法的研究，提出了考虑置信区间长度影响的加权最小二乘法。

It is supposed that the initial normal stiffness of unloading and reloading curves is calculated from those of the previous loading and unloading curves, and then the cyclic loading constitutive equation for rock fracture is established.

假定卸载曲线和重加载曲线在法向的起始刚度由前一次加载曲线和卸载曲线决定，从而完全确定岩体节理循环加载本构方程。

Cyclodrive ; envelopment ; gears ; engage ; development ; cycloidal curve ; equidistant curves ; conjugate curves ; pitch point ; short arm coefficient ; planetary gear mechanism

摆线针齿传动；包络；齿轮；啮合；研制；摆线；等距曲线；共轭曲线；节点；短幅系数；行星机构

An optical system with refraction and total internal reflection was proposed according to the luminous characteristic of LED and the law of energy conservation. The ordinary differential equations satisfying the spots on the contour curve of TIR refractive and reflective planes were established. The coordinates of points on profile curves were obtained by solving these ordinary differential equations using Runge-Kutta method. The profile curves were acquired by curve fitting of the coordinate spots with software UG, and then TIR model of the projector and data of the surface shape suitable for NC manufacture were obtained.

根据LED的发光特性以及能量守恒定律选择采用折射全反射光学系统，通过建立TIR折射面及全反射面轮廓曲线上的点所满足的常微分方程，利用RungeKutta求解常微分方程得到轮廓曲线上点的坐标，再在UG中对坐标点进行曲线拟合得到轮廓曲线，进而得到TIR模型及适合数控加工的面形数据。

The results indicate the different faults have the different response curves, the different main faults of DEH Control System can be diagnosis by the different response curves.

研究结果表明，电液转换器和油泵的不同故障具有明显不同的响应曲线，可以通过其不同的响应曲线识别DEH系统的主要故障。

This paper proposes an efficient hardware architecture to speed up computing point multiplication for elliptic curves cryptosystem over fields GF2(superscript m, which mostly exploits the features of such elliptic curves and finite fields to deliver optimized special circuits for them.

提出了GF2(上标 m上的椭圆曲线点积加速器的一种有效的硬件设计，针对不同有限域GF2(上标 m及其上的椭圆曲线的特点，设计出较优的专用电路。

The results show that the calculated elution curves from the model proposed in this work are good agreement with the experimental elution curves.

实验结果表明，非平衡数学模型计算出的理论流出曲线与实验流出曲线比较吻合。

Researches reveal that students who suffer from corporal punishment tend to resort to violence in their future life.

研究表明遭受过肉体惩罚的孩子倾向于在他们今后的人生中使用暴力。

Total sugar of sarcocarp and chlorophyll of pericarp increased firstly, and then decreased afterward along with altitude; Titratable acidity, ascorbicacid and anthocyanin of pericarp were increased along with altitude; The content of protein increased firstly and decreased afterward along with altitude; Carotenoid of pericarp were decreased along with altitude.

果肉总糖和果皮叶绿素含量随海拔高度升高先升高后降低；可滴定酸、维生素C和果皮花青苷含量均随海拔升高而升高；蛋白质在1720m处最大，1420m处最小；果皮类胡萝卜素随海拔升高而降低。