High molar ratio K2O hollow glass microsphere
low molar ratio of CaO to SiO2
low molar ratio UF resin
low molar ratio urea-formaldehyde resin
lower molar ratio formaldehyde-urea-melamine resin
Molar ratio between methanol and isobutylene
Molar ratio of calcia and γ-alumina
molar ratio of Cu to Ni
Molar ratio of Fe to Mo
molar ratio of inorganic precursor
molar ratio of OH~-to Zn~(2+)
molar ratio of OH-to Zn2+
Molar ratio of raw materials