Icyuma gike ni iki?
Mu myaka mike ishize, twumva kenshi "ikibazo cyicyuma kidasanzwe" cyangwa "ikibazo cyicyuma kidasanzwe".Ijambo, "ibyuma bidasanzwe", ntabwo ariryo ryasobanuwe mu myigire, kandi nta bwumvikane ku kintu kijyanye.Vuba aha, iryo jambo rikoreshwa kenshi mu kwerekana ibintu 47 byuma byerekanwe ku gishushanyo 1, ukurikije ibisobanuro byashyizweho bisanzwe.Rimwe na rimwe, ibintu 17 bidasanzwe byisi bibarwa nkubwoko bumwe, kandi byose hamwe bibarwa nka 31. Hariho ibintu 89 byose biriho mwisi karemano, kubwibyo, twavuga ko hejuru ya kimwe cya kabiri cyibintu ari ibyuma bidasanzwe; .
Ibintu nka titanium, manganese, chromium, biboneka cyane mubutaka bwisi, nabyo bifatwa nkibyuma bidasanzwe.Ni ukubera ko manganese na chromium byabaye ibintu byingenzi ku isi yinganda kuva mu ntangiriro zayo, zikoreshwa nk'inyongeramusaruro mu kuzamura imiterere y'icyuma.Titanium ifatwa nk '"imbonekarimwe" kubera ko ari icyuma kitoroshye kubyara kuko hakenewe ikoranabuhanga ryo hejuru mu gutunganya ubutare bwinshi mu buryo bwa okiside ya titanium.Kurundi ruhande, uhereye mubihe byamateka, zahabu na feza, byabayeho kuva kera, ntabwo byitwa ibyuma bidasanzwe.kurikije ibihe byamateka, zahabu na feza, byabayeho kuva kera, ntabwo byitwa ibyuma bidasanzwe. .
