反向元件 retrodirective reflection: 后向反射,逆向反射; 逆向反射retrodirective reflector: 后向反射器passive retrodirective element: 被動(dòng)后向反射器spheric retrodirective array: 球面反向天線陣and component: 與元件下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯