Warning: file_put_contents(): Only 0 of 6806 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 muon英英字典_muon剑桥英语解释_muon柯林斯英文解释_沉淀汉英词典
1. N a positive or negative elementary particle with a mass 207 times that of an electron and spin . It was originally called the mu meson but is now classified as a lepton μ(介)子