orbital node

例句：

1. 1. The orbital node isthe point where the Earth's gravitypulls on the Moon.
   轨道节点是地球引力对月球的牵引点。
2. 2. Theorbital node is also known as theNorth Node.
   轨道节点也被称为北节点。
3. 3.The orbital node is a critical partof the spacecraft's navigation system.
   轨道节点是航天器导航系统的关键部分。