字典網>> 英漢字典>> D開頭詞條>>direct vacuum tube current的意思 漢英字典direct vacuum tube current中文翻譯：【醫】 直接真空管電流 direct vacuum tube current相關詞條：directly heated rotary dryer director's remuneration directional derivative direct image direct-inset subroutine direct steam generator direct directivity factor direction rectifier directory caching