椭圆的

She had thin blonde hair and her face was pretty and petite in a Regency way, oval like a miniature, though she had a harsh way of speaking-perhaps the accent of the school, Roedean or Cheltenham Ladies' College, which she had not long ago left.

她瘦金黄色的头发和她的脸很漂亮，并且娇小在摄政方式、椭圆和，虽然她有一个严厉的口音学校，罗顿或提出女士们的大学，她没有很久以前就离开了。

The principle of the micro circular traveling wave ultrasonic motor is described mostly,which include the structure of the mo- tor,the principle of traveling wave,the principle of elliptical motion ,the drive principle of the motor.

重点介绍了微型环型行波超声波电机的结构、行波的产生、椭圆运动的产生、驱动原理等，最后介绍了制作这种电机的实验结果。

In using integral equation, The author brought forth some new idea about the dissection of magnet. The author also made a thorough investigation and study of the fast convergence numeric algorithm of complete and incomplete elliptic integral. In order to make full use of the computer resource, the author considered the symmetry of the magnet structure.

在应用积分方程法设计时，依据设计要求而对源区进行的剖分有独到之处，并对由剖分而引入的各类完全和不完全椭圆积分的快速收敛数值算法进行了深入探讨，还充分利用磁体结构对称性进行简化，以减少计算时间，使得当前的计算机资源能满足积分方程法之所需。

The most important idea is that over the complex numbers, an elliptic curve looks like a torus, and the points of finite order in the group of the curve have a very simple geometric description.

最重要的思想是复数域上的椭圆曲线是一个环面，曲线簇中的有限阶点有简单的几何描述。

Utilizing the complex multiplication property of the curves and using a modulo reduction and Frobenius expansion technique, Bring forward that there is a fast point multiplication method without precomputation on the curves, which is 6 times fast than the ordinary repeated-double-add method.

针对一类特征3的Koblitz椭圆曲线的点乘算法，利用这类曲线的复乘性质，使用模约减和Frobenius展开技巧，提出一种不带预计算的快速点乘算法。

It combines the resolution equations of passive time difference of arrival location with actual movement of underwater target, uses the Extended Kalman Filter algorithm, analyses tracking problem of underwater target and the confidence ellipse for every moment.

将被动时差定位的解算方程与水下目标的实际运动相结合，采用扩展卡尔曼滤波算法，分析水下目标的跟踪问题及其每一时刻的置信椭圆。

Starting from the conditions of law of conservation of energy and angular momentum,how to deal with simple disposal of several physical equations of the planetary motion by applying the elementary mathematical equations is proposed.

从角动量和能量守恒定律出发，建立行星椭圆运动的轨道方程，导出行星运动时的各个物理量表达式，从而给出了一种以初等数学为基础的处理行星运动的简洁方法。

In wire-cutting manufacturing of the top and bottom different curve,accomplishing cutting way of ellipse bias changing curved surface which between two plane curve into developable surface in order to calculate NC program of four axis ganging.

在上下异型工件的线切割加工中，宜采用椭圆偏置切割法，即将上、下两平面曲线间的曲面变成可展直纹面，进而计算四轴联动的数控程序，可保障加工的效率与效益。

This kind of equation is from diffusion process with jumps and has important application in stochastic control and finance mathematics.

本文研究一类带有非局部积分项的完全非线性椭圆型方程粘性解的比较原理，这类方程源自带跳跃的扩散过程，在随机控制，金融数学中有广泛而重要的应用。

The M Q algorithm has been applied to the second order elliptic problems with the Dirichlet boundary conditions,and the so called R condition is involved in the convergence theorem and the optimal relaxation parameter.

M-Q算法所考虑的是二阶椭圆型Dirichlet边值问题，此时有所谓的R条件成立，算法的收敛定理以及松弛因子的选取都需要该条件。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。