a craft capable of traveling in outer space; technically, a satellite around the sun
双语例句
How many spacecrafts are orbiting the moon? 有多少航天器绕月球轨道飞行?
The rotation dynamic and quaternion kinetic equations of spacecrafts were educed according to the principles of variable-structure control. 根据滑动模态变结构控制原理,导出了航天器三轴动力学和四元数姿态运动学方程。