詞語：retropack
retropack的解釋
retropack['retrəupæk]n.制動(或減速)發動機；制動(或減速)裝置(宇宙飛船上的一種輔助火箭系統，能產生與飛船航向相反的動力，用以減速)
retropack的意思
retropack 制動發動機;釋義：制動裝置;
retropack的參考例句
1.The reasonable usage of the electrical engineering car and how to make the best retropack result of the electrical engineering car were introduced in this paper. 電機車制動力的合理使用，從而使電機車達到最佳的制動效果。