音標發(fā)音英式音標 [?ret.r???r?k.?t]美式音標 [?ret.r??rɑ?.k?t]英式發(fā)音 美式發(fā)音 基本解釋n.制動火箭同根派生 retrorocket相關(guān)詞英漢例句The bottom unit consisted essentially of four landing struts equipped with a retrorocket to cushion the descent. 下節(jié)登月艙實際上是由四個登陸支柱和減速火箭所組成的，而減速火箭是在登陸時用來減低沖力的。High-Impulse Retrorocket System 高沖量制動火箭系統(tǒng)retrorocket unit 制動火箭發(fā)動機retrorocket更多例句英英字典劍橋英英字典 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 downretrorocket劍橋字典retrorocket柯林斯字典