标准值:
[Ag] ,[Al] ,As ,B ,Ba ,Be ,Bi,
[Br] ,Ca ,Cd ,Ce ,[Cl] ,Co ,[Cr],
Cs ,Cu ,Dy ,Er ,Eu ,Fe ,Gd ,Ge,
Hg ,Ho ,[I] ,K ,[La] ,Li ,Mg,
Mn ,Mo ,[N] ,[Na] ,[Nb] ,[Nd],
Ni ,P ,Pb ,[Pr] ,Rb ,[S] ,[Sb],
[Sc] ,Se ,[Si] ,Sm ,[Sn] ,Sr,
[Tb] ,[Th] ,[Ti] ,Tl ,[Tm] ,[U],
[V] ,Y ,Yb ,Zn