Ugbu a, ụlọ ọrụ anyị nwere ndị ọrụ aka ọrụ asatọ (gụnyere injinia ise), nwere ikike ịzụlite ngwaahịa ọhụrụ, nwere ebe nhazi nke a na-eme n'oge Abramive. Nsogbu ọrụ teknuzu tupu yana mgbe ndị injinia ga-aza ya.