查询词典 hyperbola

By using hyperbolas to fit axial curves, considering the maximal error of the fitting curves as the objective function, the optimal fitting hyperbola is obtained and the maximal error of fitting curves is minimal after optimization.

通过双曲线来拟合齿向曲线，使拟合曲线的最大误差为目标函数，利用优化的方法，使最大误差最小，得到最优的拟合双曲线，从而加工出所需要的齿形。

Either of two quadric surfaces generated by rotating a hyperbola about either of its main ax es and having a finite center with certain plane sections that are hyperbolas and others that are ellipses or circles.

双曲面两个二次曲面的任何一个，通过使一个双曲线绕其任何一根中轴旋转而成，而且旋转时有一个有一定双曲线平面切面的中心，而其他切面是椭圆或圆周

In order to probe the relationships between wave equation offset domain common image gathers/angle domain common image gathers with migration velocity, we quantitatively derive the changes of ODCIGs and ADCIGs along with migration velocity on the assumption of uniform velocity medium with a horizontal reflector. We come to conclusion that ODCIGs are hyperbolas with half offset; on the contrary, they are ellipses. Combined with the results of depth focusing analysis, we find the apparent incident angles in ADCIGs are larger than the real incident angles when the migration velocity is larger than the true one and vice versa. With lower migration velocity, the residual moveout on ADCIGs is an ellipse with the tangent of apparent incident angle; otherwise, it's a hyperbola.

为了得到波动方程偏移距域共成像点道集和角度域共成像点道集与偏移速度的关系，在匀速单层水平反射情况下，对ODCIGs和ADCIGs随偏移速度的变化进行了定量的推导，得到偏移速度偏小时ODCIGs与半偏移距成双曲关系，反之成椭圆关系；结合深度聚焦分析，得到偏移速度偏大时ADCIGs中视入射角大于真入射角，反之，小于真入射角；在速度偏小时，ADCIGs上剩余时差与视入射角的正切值成椭圆关系，反之成双曲关系。

We also define the companion angles and of a normalized triangle , there is no companion centers associated with companion angles and they are close related to the asymptotes and of the hyperbola of the nonisosceles triangle .

我们也定义正规三角形的伴角、，他们与的双曲线的渐近线、有密切的关系。

By calculating the time differences among GIBs, position of a underwater target can be resolved using hyperbola intersecting.

差分GPS参考站主要提供GPS差分信号，实现GPS实时精密动态测量。

Additionally, the author proves the fact that the coordinate differential is embodied in hyperbola intersecting algorithm. 3. Time measurement Based on GPS Time System The basic observation for UGPS is the time that acoustic signal arrives at GIB. To measure the time difference, the time system of every GIB should be synchronized as all GIBs are working independently.

要测量时间差值，必须要求各个浮标系统的时钟严格同步，本文采用了基于GPS时间系统的浮标时钟同步，同时通过GPS接收机的1PPS脉冲校正延时测量漂移，实现精密的时间测量方法。

The interference fringe is fitted by hyperbola so perfectly that it is more precise to obtain the feature points of interference figure.

干涉条纹可以用双曲线很好地拟合，使干涉图特征点的提取更为精确。

Beginning with parabolas, the author explores the issue of 定点 between a line and a parabola, eclipse, or hyperbola.

笔者从抛物线入手，对抛物线、椭圆、双曲线与直线结合的定点问题作了一个探索。

Based on the technology of machining the tooth profile of hobbing shaving cutter for cutting hardened gear, the approximate forming of the tooth profile on normal section is carried out by means of straight line fitting, arc fitting and hyperbola fitting.

基于硬齿面滚剃刀齿形的制造方法，分别采用直线、圆弧、双曲线拟合法对滚剃刀法截面齿形进行了近似造型。

Based on the thought of the Hyperbola Function Expansion Method, we obtained some analytical solutions of the modified Korteweg-de Vries equation by introducing new expansion functions.

基于双曲函数法的思想，通过选择新的展开函数，得到了modified Korteweg-de Vries 方程的几类精确解，其中一类为具有扭结——反扭结状结构的双扭结单孤子解。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新