字典網>> 英漢字典>> D開頭詞條>>direct-current amplifier的意思 漢英字典direct-current amplifier中文翻譯：【電】 直流放大器direct-current amplifier相關詞條：direct ballottement direct printing direct-heated cathode direct particle direct stimulation Direct Bordeaux GB direct invasion direct sound wave direct-acting regulator direct filling resin