Dreye权威释义

n.

同义参见:

以上来源于：《英汉大辞典》

/ˈprəʊtɒn/

n.

Physics a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron.

1920s: from Gk, neut. of prōtos ‘first’.

以上来源于：《简明牛津英语词典》