Perm ewepụtala ngwugwu ngwanrọ maka ijikwa sistemu ogbugba mmiri n'ubi
Otu ndị ọkà mmụta sayensị, nke gụnyere onye nyocha sitere na Mahadum Perm Polytechnic, ewepụtala ngwugwu ngwanrọ na-enye gị ohere ijikwa nke ọma ...
Sọnde, Eprel 28, 2024
Label: ngwanrọ
