n.喷射剂(如喷雾器中的压缩气体)，推进剂(如发射用火药)

原形：propellant复数：propellants

Rocket fuel, also known as propellant, is the chemical substance that powers rocket engines to lift a spacecraft off the ground.
火箭燃料，也称为推进剂，是驱动火箭发动机使航天器离开地面的化学物质。
The spacecraft's main propellant was a highly efficient hydrogen-oxygen mixture.
航天器的主要推进剂是一种高效的氢氧混合物。
The engineers had to carefully choose the right propellant for the long-duration mission.
工程师们必须精心选择适合长期任务的推进剂。
The launch vehicle expelled its propellant at high velocity to generate thrust and propel the satellite into orbit.
发射车辆以高速度排出推进剂产生推力，将卫星送入轨道。
The company is working on developing a reusable propellant for their next-generation rockets.
该公司正在研发下一代火箭的可重复使用推进剂。
The spacecraft's fuel tanks were filled with liquid oxygen and kerosene propellants before liftoff.
航天器的燃料箱在发射前装满了液氧和煤油推进剂。
The hybrid propulsion system combines both solid and liquid propellants for increased efficiency.
混合推进系统结合了固态和液态推进剂，以提高效率。
The study examined the performance of different types of propellants under varying environmental conditions.
该研究考察了不同类型的推进剂在不同环境条件下的性能。
Propellant exhaustion is a critical factor in determining a rocket's maximum altitude and payload capacity.
推进剂耗尽是决定火箭最大高度和有效载荷能力的关键因素。
Astronauts on the International Space Station use recycled propellant from spent boosters for station maintenance tasks.
国际空间站上的宇航员会利用废弃助推器回收的推进剂进行空间站维护工作。