gravitational tide
常见例句
- It is well known that the earth tide causes the temporal variations of gravitational field.
精密和详细测定地球重力场及其时间变化，是目前卫星重力测量的主要课题。 - Tide: periodic rising and falling of large bodies of water resulting from the gravitational attraction of the moon and sun acting on the rotating earth.
UNESCO: L O S S A R Y 返回 gravitational tide