固态火箭发动机 meaning in Chinese
solid-fuel rocket
Examples
- The appearance in recent years of rapier solid fuel propulsion units has also lead to an entertaining detour into the wonderful world of small free - flight scale jets
近年来固态火箭发动机（翻译者注：不知道怎么翻译，从后面看就是火箭发动机原理）也开始在小尺寸像真模型的领域应用。