dubnium
/ˈdʌbnɪəm/noun
mass noun
- the chemical element of atomic number 105, a very unstable element made by high-energy atomic collisions. (Symbol: Db)（化学元素）（符号： Db）。参见 HAHNIUM, JOLIOTIUM.
词源
1967: modern Latin, from Dubna in Russia, site of the Joint Nuclear Institute.