1N-MASS 推进剂;发射药;火箭燃料Propellant is a substance that causes something to move forwards. 推进剂;发射药;火箭燃料
...an enormous amount of propellant.
大量的推进剂
...a propellant for nuclear rockets.
核火箭的燃料
2N-MASS (喷雾容器中提供压力的)压缩气体Propellant is a gas that is used in spray cans to force the contents out of the can when you press the button. (喷雾容器中提供压力的)压缩气体
By 1978, in the USA, the use of CFCs in aerosol propellants was banned.