Nkebi ahịrịokwu 1: Na okpomọkụ dị elu na nrụgide dị elu nke hydrogen, hydrogen nwere ike ịgbasa n'ime alloys carbon steel. Nkebi ahịrịokwu nke abụọ: N'ihi okpomọkụ dị elu na nrụgide dị elu nke hydrogen, hydrogen nwere ike ịgbasa n'ime alloys carbon steel. Ajụjụ: Ọ̀ bụ otu ihe ka ahịrịokwu nke mbụ na nke abụọ pụtara? Ee ma ọ bụ Ee e?
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