adding method of yttria
adding Ti at low temperature
silo-input material adding method
thin layer rotary adding method
thin-layer intermittently adding method
bipolar electrolytic method
ion-exchange membrane electrolytic method
adding amount and adding way
acid hydrolyzation method and enzyme hydrolyzation method
cell- recurrence method and fractal box- counting method
CRD method cross diaphragm method
ethanol injection method combined with the ammonium sulphate gradients method
exterior marker method and internal marker method