门捷列夫的“旷缺”与中国公使的感叹
刘钝
The vacancies in Mendeleev periodic table and the exclamation from Chinese envoy
LIU Dun
自然杂志 . 2019, (4): 294 -298 .  DOI: 10.3969/j.issn.0253-9608.2019.04.009