low molar ratio of CaO to SiO2
low molar ratio UF resin
lower molar ratio formaldehyde-urea-melamine resin
Molar ratio between methanol and isobutylene
molar ratio of inorganic precursor
molar ratio of OH~-to Zn~(2+)
molar ratio of OH-to Zn2+
molar ratio of SiO2 to Al2O3
oxygen-coal molar ratio
the molar ratio of TiO2 and ZnO
ratio of the molar heat capacities of gas
axial compression ratio and slenderness ratio
a mandibular second molar