變推力液體火箭發(fā)動(dòng)機(jī) variable thrust rocket motor: 可變推力的火箭發(fā)動(dòng)機(jī)controllable thrust rocket engine: 可控推力火箭發(fā)動(dòng)機(jī)dual-thrust rocket engine: 兩級(jí)推力火箭發(fā)動(dòng)機(jī)reverse-thrust rocket engine: 反推力火箭發(fā)動(dòng)機(jī)hypergolic liquid rocket engine: 自燃液體火箭發(fā)動(dòng)機(jī)下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯