Nke kacha amasị gị

soplaya nke eke monomers

Ihe nleba anya igwe ọhụrụ a kwadoro

Igwe spectrometer ọhụrụ nwere ike inyere anyị aka ịmata ngwa ngwa ngwa ngwa, nke ọma na nke ọma

32 (3)


Oge nzipu: Mar-01-2021