Can we find out what the semimajor axis is?
能否算出，半轴长是多少？
Either half of the major axis is called a semimajor axis.
长轴得每一半叫做半长轴。
The effect of rate of change for semimajor axis and inclination perturbation and drift of semimajor axis and inclination on the ground-track drift was analyzed.
分析了半长轴和倾角摄动变化率，以及初始半长轴和倾角偏置量对地面轨迹漂移的影响。
A The ellipse has a semimajor axis A,-2a perigee to apogee& is2a.
椭圆轨道半长轴为，近地点到远地点。
So that's the reason why this semimajor axis is indeed such a horrendous number.
这就是为什么半长轴是，如此大的数字的原因。
A The ellipse has a semimajor axis A, 2a perigee to apogee is 2a.
椭圆轨道半长轴为，近地点到远地点。
Orbital eccentricity and inclination's inspire degree are related to their initial orbital semimajor axis, eccentricity and inclination.
Kuiper带天体的轨道偏心率和倾角的激励程度和天体的初始轨道半长径、偏心率、倾角有关。
Either half of the major axis is called a semimajor axis. Application of Oil-free Lubricating Material to Long Shaft Bearings for Dog Transfer
长轴的每一半叫做半长轴。拨入机长轴轴承无油润滑材料的应用
Perturbation effect of the earth ′ s magnetic field on the variation of the semimajor axis and eccentricity of the orbit of a charged equatorial sattellite
地球磁场对带电赤道卫星的轨道半长轴和偏心率的摄动影响
The theory derivation for in-plane maneuver on semimajor axis, eccentricity and perigee argument and out-plane maneuver on orbit inclination was presented in this paper.
针对中低轨道卫星，对平面内卫星半长轴a、偏心率e和近地点幅角ω联合调整，以及平面外轨道倾角调整等进行了理论推导。
The Runge-Kutta-Fehlberg algorithm ( RKF), the symplectic algorithm and the Hermite algorithm for N-body problems are studied with energies errors and semimajor axis and eccentricity.
对N体问题的数值积分中的Runge-Kutta-Fehlberg法（简称RKF法）、辛算法和厄米算法在N体问题中应用时引起的能量误差、半长径和偏心率的变化进行比较。
That if you have various orbits which have the same semimajor axis, that the period is the same and the energy is the same, and that's by no means obvious.
如果有多条轨道，都有相同的半长轴，周期相同，功业想听，这决非显而易见的。
The orbit injection parameters and firing attitude that affected velocity increment for orbital acquisition were presented. The relationships between the velocity increment and orbit semimajor axis, perigee altitude, inclination, and perigee argument were simulated.
给出了影响卫星定点捕获所需速度增量的入轨轨道参数和点火姿态等因素，并仿真计算了轨道半长轴、近地点高度、倾角和近地点幅角与速度增量的关系。
The perturbation effect of the earth's magnetic field on the variation of the semimajor axis and eccentricity of the orbit of a charged equatorial satellite is studied by using the method of the perturbation.
本文利用摄动理论研究了带电的赤道卫星在地球磁场中做椭圆轨道运动时地磁摄动力对轨道半长径和偏心率的摄动影响。
