999英语网 英语单词
Proton的音标发音
Proton
英式发音：['prtn] or ['protɑn]
美式发音
(noun.) a stable particle with positive charge equal to the negative charge of an electron.
校对:瓦珥
(noun.) a stable particle with positive charge equal to the negative charge of an electron.
校对:瓦珥