1) Moving-point trajectory equation
动点轨迹方程
1.
Moving-point trajectory equations is likely to cause mistakes, which will easily lead to more wrong results.
求动点轨迹方程时 ,由于仅用不等价变形常常会出现增解 ,如果不能识别 ,则导致答案错误。
2) track equation
轨迹方程
1.
Kinematic analysis for certain and uncertain eccentricity plane lapping processes with the ring polishing machine were studied and compared,pace vector and track equation about one point relative to examination piece on polishing pad were presented.
对修正环形抛光机定偏心和不定偏心平面研磨进行了运动分析,给出了研磨盘上一点相对于工件的速度矢量与轨迹方程,讨论了研磨盘上不同位置的点的相对轨迹。
2.
By explaining the method of conic "not set up " and total elimination and concluding the law of the straight-line where the mid-point trajectory and the mid-point sting are in,this paper demonstrates the method of solving the track equation where the strings of the mid-point trajectory and the mid-point strings are in.
通过圆锥曲线讲解设而不求与整体消元的解题方法,并利用这种方法归纳弦中点轨迹、中点弦所在直线的规律,给出了解决弦中点轨迹方程、中点弦所在直线方程的方法。
3) locus equation
轨迹方程
1.
Based on the basic principles of differential geometry the locus equation of the movement of the grinding wheel center during clearance face grinding of the major cutting edge of a ball nose end milling cutter with equal orthogonal clearance angle is deduced,which supply the NC grinding of the clearance face of a ball nose end milling cutter with a feasible mathematical mode
利用微分几何的基本理论，建立了球头立铣刀端刃等主后角刃磨时，砂轮中心的运动轨迹方程，从而为球头立铣刀端刃后刀面的数控刃磨加工提供了可行的数学模型。
2.
In this paper, by cross ratio, on affine plane, as to conic, we probe the locus equation of intersection point of two tangent lines with intersectional angle θ, and reveal several special examples about it.
利用交比 ,在仿射平面上 ,对于二阶曲线 ,探求交成θ角的两切线的交点的轨迹方程 ,进而揭示其若干特殊情形 。
3.
The locus equation of the non - locatized interference fringe is given.
本文绘出了非定域干涉条纹的轨迹方程，定量分析了观察屏正截和斜截时所得干涉条纹的几何形状。
4) track of moving point kinematics
动点轨迹
5) ray trajectory equation
轨迹方程式
1.
The ray trajectory equation and imaging of microlens arrays are presented.
利用积分形式的光线方程式讨论了平面交叉型微透镜的近轴光学特性,研究了微透镜的光线轨迹方程式和一些重要的近轴成像特性,利用ABCD定理得到了平面交叉型微透镜像距、焦距、像高、横向放大率和主平面位置的数学表达式,焦距的理论计算结果和实验数据吻合得很好。
6) locus of an equation
方程的轨迹
补充资料：星下点轨迹
人造地球卫星在地面的投影点（或卫星和地心连线与地面的交点）称星下点，用地理经、纬度表示。卫星运动和地球自转使星下点在地球表面移动，形成星下点轨迹。对于位于星下点处的地面观察者来说，卫星就在天顶。卫星经过升交点（见轨道要素）时，星下点在赤道上。将星下点轨迹画在地图上便是星下点轨迹图。在星下点轨迹图上可以看出某一个时间卫星在某地的天顶附近。在麦卡托投影地图上，近地卫星的星下点轨迹像一条正弦曲线。地球同步轨道卫星的星下点轨迹是一条8字形的封闭曲线。静止卫星的星下点轨迹是一个点。不考虑轨道摄动，星下点轨迹所能达到的最南和最北的地理纬度数值等于轨道倾角值。有人把通过卫星的参考椭球面的法线代替卫星到地心的连线，这一法线和参考椭球面的交点定义为星下点。由于地球采用参考椭球体，这两种星下点将在同一个经圈上,其纬度相差也很小(几个角分)。在轨道设计中,常用星下点轨迹图来表示卫星飞经的区域。世界上一些规模较大的测控中心用大屏幕实时显示星下点轨迹图，为人们提供卫星运行情况。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条