字典網>> 英漢字典>> D開頭詞條>>directional solidification的意思 漢英字典directional solidification中文翻譯:【機】 方向性凝固英文字典相關詞條:directional hydrophone directional graph directional filter directional counter directional control valve directional separation filter directional relay directional microphone directional pattern directional comparision relay