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 experimental data are fitted by use of the optical model. The probable reasons of the enhancement and oscillation of the elastic scattering angular distribution are discussed.
用光学模型对实验数据进行了拟合，并讨论了弹散角分布振荡及增强的可能原因。
3
Because of oscillation of the blower load the variation of angular velocity of the blower rotor and beats in lower frequency are inevitable.