Birta daloolintu waa bir xaashi ah oo la shaabadeeyay, la sameeyay, ama la feeray si loo sameeyo qaab godadka, godadka, iyo qaababka qurxinta kala duwan.Biraha kala duwan ee birta ah ayaa loo isticmaalaa habka birta daloolinta, kuwaas oo ay ku jiraan birta, aluminium, birta, naxaasta, iyo titanium.Thug...
Akhri wax dheeraad ah