■ noun the commonest natural carbon isotope, of mass 12, which is the basis for the accepted scale of atomic mass units.
CARBON-12
Meaning of CARBON-12 in English
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004
■ noun the commonest natural carbon isotope, of mass 12, which is the basis for the accepted scale of atomic mass units.
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004