首頁›Browse›V›vacuum tubevacuum tube編輯正在努力提供更完整的內容，建議 20 分鐘後再回來看看vacuum tubevacuum tube — 名詞名詞1. an electronic device that controls the flow of electrons in a vacuum1.名詞釋義真空管an electronic device that controls the flow of electrons in a vacuum例句Old radios used vacuum tubes instead of transistors.