轨道椭圆 meaning in English

keplerian cllipse
orbital ellipse

2 ) we analyse the locomotion equation , trajectory parameter , trajectory ellipse parameter , average angel velocity formula under the condition that we only think about the g - force . we ascertain the relationship of the target place and the moving velocity and flying time by keplei equation , and ascertain the trajectory and the data of the place target landing , finally we analyse the effect on the target trajectory and landing from the earth ' s rotation itself
( 2 )分析了在只考虑地球引力情况下的雷达目标运动方程、轨道面参数、轨道椭圆参数、平均角速度公式;通过迭代求解开普勒方程确定了目标位置、目标运动状态和飞行时间的关系;确定了雷达目标的轨道、落点数据;最后,分析了地球自转对目标的轨道和落点的影响。