retrorocket

劍橋詞典

a rocket on a spacecraft or an aircraft that fires in the opposite direction to the direction in which the vehicle is travelling , in order to slow it down
反推進(jìn)火箭；制動(dòng)火箭（宇宙飛船或航空飛機(jī)等航空器上的一種火箭，其發(fā)射方曏與航空器飛行方曏相反，從而使之減速） 返回 retrorocket