Kui soovid oma küsimusele vastust, jäta meile oma e-posti aadress.
Aitäh, oleme tagasiside kätte saanud.
a weight taken at 20o C, the conventional mass is the mass of a reference weight of a density of 8 000 kg/m3 which it balances in air of a density of 1 72 kg/m3
