kev什么意思解释

The cross sections for these fusion reactions are appreciable only for incident energies above 10 KeV.只有当入射能量超过10千电子伏时,这些聚变反应的截面才是可观的.A source told the News of the World : This vid is dynamite and Kev knows it.有消息说: 录像带内...

kev的音标：...