「step rocket」の発音の仕方
「step rocket」の独自の発音を追加します
「step rocket」の意味と定義
- Noun
a rocket having two or more rocket engines (each with its own fuel) that are fired in succession and jettisoned when the fuel is exhausted
同義語:
a rocket having two or more rocket engines (each with its own fuel) that are fired in succession and jettisoned when the fuel is exhausted