retrorockets

retrorockets

美 　英

• n.減速火箭

詞形變化

復數：retrorockets  

英漢解釋

n.

1. 減速火箭

英英解釋

n.	1. a small rocket engine on a spacecraft or missile that produces thrust to act against the main engines, used for decelerating

例句

Each craft had to hit the atmosphere right, deploy its parachute, turn on retrorockets and inflate airbags just before touchdown.

每架探測器必須以正確的角度進入大氣，展開降落傘，點燃制動火箭，并在著陸瞬間為安全氣囊充氣。更詳細。