(~s)
A ~ is an atomic particle that has no electrical charge.
Each atomic cluster is made up of ~s and protons.
N-COUNT
(~s)
A ~ is an atomic particle that has no electrical charge.
Each atomic cluster is made up of ~s and protons.
N-COUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012