double-base rocket propellant

例句：

1. 1.The double-base rocket propellant is a key component in the launch of spacecraft.
   双基火箭推进剂是太空船发射的关键组成部分。
2. 2. The development of double-base rocket propellant has greatly improved the efficiency of space missions.
   双基火箭推进剂的发展大大提高了太空任务的效率。
3. 3. The use of double-base rocket propellant in space exploration has revolutionized the way we understand the universe.
   在太空探索中使用双基火箭推进剂已经彻底改变了我们对宇宙的理解。