half frequency precession

例句：

1. 1.The half-frequency precession of the satellite is causing a problem for the navigation system.
   卫星的半频率摆动给导航系统带来了问题。
2. 2. The scientists discovered that the half-frequency precession of the planet's rotation could be used to predict weather patterns.
   科学家们发现，行星旋转的半频率摆动可以用来预测天气模式。
3. 3. Due to the half-frequency precession of the Earth's axis, the seasons change in a way that is not predictable.
   由于地球轴的半频率摆动，季节的变化是不可预测的。