字典網>> 英漢字典>> D開頭詞條>>double-purpose valve的意思 漢英字典double-purpose valve中文翻譯：【電】 雙作用閥英文字典相關詞條：double seal double-check double arc method double sound source double knot double shell digester double inlet centrifugal blower double probate double-tube converter double space key