字典網>> 英漢字典>> D開頭詞條>>direct-heated cathode的意思 漢英字典direct-heated cathode中文翻譯：【電】 直熱式陰極英文字典direct-heated cathodedirect-heated cathode相關詞條：direct auscultation direct material consumed direct light reflex direct sound wave direct aggression direct vision spectroscope direct-acting Direct Bordeaux GB direct aeration method Direct Diazo Black BH