Kui soovid oma küsimusele vastust, jäta meile oma e-posti aadress.
Aitäh, oleme tagasiside kätte saanud.
the ratio of the density of a substance to the density of some reference substance, ratio of density to a reference density, usually the density of water at 4°C, materjali tiheduse ja standardmaterjali tiheduse suhe
