Kedu ihe ejiri mee pensụl?

	Ụlọ A na-eji osisi siri ike mee ahụ nke pensụl ọkwá nkà.
	Osisi siri ike Ụdị osisi siri ike a na-eji gụnyere osisi oak, ash na beech: ndị a bụ osisi siri ike bara uru maka ike na ogologo oge ha.
	Akụkọ Pennsụl "edu ndú" nwetara aha ya n'ihi na isi ya bụ nke ụzọ mbụ. Pensụl ọgbara ọhụrụ nwere ụzọ graphite.
	Graphite Graphite bụ ihe ịnweta ikuku nke carbon carbon mebere. Graphite pụtara n'ụzọ nkịtị "nkume edemede" dịka ejirila ya kemgbe ọtụtụ narị afọ dịka isi ma ọ bụ "isi" nke pensụl.

Agbakwunyere

February 23 2023

in