雙向繼電器relay: n. 1.接替的馬;驛馬;接替的狗;(備有接替馬匹的)旅 ...bidirectional: 雙方向的; 雙向的; 雙向性的,8字型指向的; 雙指向性backward and bidirectional: 反向與雙向的bidirectional algorithm: 雙向算法bidirectional amplification: 雙向放大下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯