內(nèi)層電子;核層電子 argon core electrons: 氬殼電子helium core electrons: 氦殼電子neon core electrons: 氖殼電子radon core electrons: 氡殼電子xenon core electrons: 氙殼電子下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯