能级间的跃迁transition: n. 转变,演变,变迁,变化;飞越;过渡期;【音乐】变调 ...between: between three and four ...energy level: 【物理学】能(量)级(位)。 transition between energy levels: 能级之间的跃迁energy level transition: 能级跃迁下载手机词典可随时随地查词查翻译