n.点头；[天]章动；[植]转头运动
A parameter design method of nutation cross-feedback control is investigated. 研究了章动交叉反馈校正的参数设计方法。
Our model of the non-rigid Earth nutation and related works are introduced, and the trend and the prior research fields of this research work are also discussed. 重点介绍了包含海洋和大气的非刚体地球章动模型和有关研究工作，并对将来的发展方向作了讨论。
For climbers nutation increases the likelihood of a solid support being found. 攀缘植物往往也具有转头运动。
