<classify> O ji teknụzụ satilaịti dị iche na teknụzụ rada nọ nala were enyere ndị na-ejikwa nfegharị ụgbọelu aka ịma ebe ụgbọelu nọ kpọmkwem ma nyekwa ndị ọkwọ ụgbọelu ozi ziri ezi.  <topic>: sciencetechnology 