electroscope
🇺🇸
/ɪ'lektrəˌskoʊp/
🇬🇧
/ɪ'lektrəskəʊp/
noun
B2
A device that shows if something has an electric charge by using two metal pieces that move apart.
The scientist checked the charged rod with an electroscope to see how strong the charge was.
科学家用验电器检查带电棒，以了解电荷的强度。
translation
验电器
词形变化
Plural
electroscopes