1·The angular difference between the astronomical axis and the axis of figure called a "nutation" causes an earth orbit al spirical oscillation known as the famous chandler "wobble".
在天文学轴和形状轴之间的角度差称做“章动”，引起地球轨道螺旋摆动，就是著名的卡南德尔“摆动”。
2·The interpretation and selection for different values of the Earth dynamical flattening will have to be approached in the construction of the future nutation theory of a non-rigid Earth.
在建立非刚体地球章动理论中，如何解释地球动力学扁率值的差异，如何选取地球动力学扁率值，还有待进一步的研究。
3·The relation between the error of nutation constant and the corrections of declinations, proper motions calculated by chain method is analysed, and the method to correct this effect is considered.
分析了章动常数误差与用连锁法计算的赤纬、自行改正之间的关系，并考虑了改正这种影响的方法。
4·Active nutation control techniques have been discussed by many authors.
许多作者研究了主动章动控制技术。
5·The stability criteria and the decay time constant of the nutation damping are obtained in an analytical form, by which the degree of the attitude stability can bd evaluated.
导出解析形式的稳定性判据和章动阻尼时间常数，可用以估计卫星的稳定度。