Warning: file_put_contents(/www/wwwroot/ppbbbu/5356789.com/cache/8de9bb6186d44e33b950295943fea9e1.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbbu/5356789.com/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_零六五六深蓝词典
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