E nwere ike iji ọtụtụ ọrụ dị elu dị ka ike dị elu, enwere ike ijikọ ihe ike, na-eguzogide na-eguzogide, na teknụzụ, na-eyi ọha egwu, onye na-eme mkpọtụ, semiconductor na kemịkalụ na kemịkalụ. Ngwa dị ka ndị a:
1. Ngwá ọrụ
2. Engine akụkụ na oke okpomọkụ
3. Ihe mkpuchi
4. Metallorgical ngwaahịa na oke okpomọkụ
5. Chemical Corrinosoon-Na-eguzogide na akụkụ na-eguzogide
