spacecrafts

常见例句

• How many spacecrafts are orbiting the moon?
  有多少航天器繞月球軌道飛行？
• The rotation dynamic and quaternion kinetic equations of spacecrafts were educed according to the principles of variable-structure control.
  根據滑動模態變結搆控制原理，導出了航天器三軸動力學和四元數姿態運動學方程。
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