英语释义
1. any of several crystalline sodium salts NaPO3 or (NaPO3)n of a metaphosphoric acid: such as
2. the water-soluble cyclic trimetaphosphate (NaPO3)3 or NaPO3 I
3. sodium Kurrol's salt NaPO3 IV
4. a water-soluble sodium phosphate glass having the composition of a sodium metaphosphate — called also sodium (1:1) phosphate — compare sodium hexametaphosphate
5. sodium phosphate glass