字典網>> 英漢字典>> D開頭詞條>>directional comparision protection的意思 漢英字典directional comparision protection中文翻譯：【電】 比較方向保護 directional comparision protection相關詞條：directional coupler directional directional derivative directional homing directional transmittion directional reception directional gain directional hydrophone directional relay directional lobe