短語詞組短語orbit -transfer vehicle [航]軌道轉(zhuǎn)移飛行器orbit transfer vehicle 軌道轉(zhuǎn)移飛行器impulse orbit transfer 式變軌orbit transfer systems 軌道轉(zhuǎn)移系統(tǒng)large orbit transfer 大機(jī)動orbit transfer rocket 軌道轉(zhuǎn)移火箭thrust orbit transfer 小推力軌道轉(zhuǎn)移 返回 orbit transfer