Igwe nhazi oghere miri emi ọhụrụ nke ụlọ ọrụ anyị mepụtara maka nhazi iko quartz maka nkwurịta okwu fiber optical ka agbakọtara ma hazie nke ọma site n'aka ndị ahịa.Ọ nwere ike ịrụ usoro nke ma mkpọpu ala na-agwụ ike.
Oge nzipu: Sep-05-2022