gravitational tide

常见例句

双语例句

• 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。

权威例句

• 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
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