Short interspersed element
Nuclear nuclear two body
short and ultra short electron bunch
short driving and short lining
short focal length lens (=short-focus lens)
Short range， short haul
Di-nuclear or tri-nuclear nickel compound
Nuclear accident in nuclear submarine
Nuclear and non-nuclear techniques
nuclear fission nuclear transmutation
nuclear physics and nuclear astrophysics
Nuclear and non-nuclear radiation
balances of oxygen element and carbon element
boundary element and finite element
conservation element and solution element method