字典網>> 英漢字典>> D開頭詞條>>directional coupler的意思 漢英字典directional coupler中文翻譯：【醫】 定向聯結器 英文字典相關詞條：directional overcurrent protection directional characteristics directional microphone directional directional transmittion directional separation filter directional element directional reception directional comparision protection directional emitter