spur type planetary reducer

例句：

1. 1. Thenew planetary reducer has greatly improvedthe efficiency of our spacecraft.
   新型行星减速器大大提高了我们的航天飞船的效率。
2. 2. Thedesign of this planetary reducer isinnovative and practical.
   这种行星减速器的设计既创新又实用。
3. 3. The planetary reducerplays a crucial role in maintaining the stabilityof the spacecraft's orbit.
   行星减速器在保持航天飞船轨道稳定中起着至关重要的作用。