vacuum tube
原始詞典資料1 筆記錄
這個字我們還沒有寫成教學內容。以下是外部詞典記錄的用法，原文照列，方便你先看懂它的意思。
vacuum tubenoun
- 1
businesselectrical-engineeringelectricityA type of electron tube that controls electron current through vacuum between electrodes within a sealed container, usually of glass or metal and often designed to be easily installed in and removed from the equipment in which it is used.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。