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шкала твёрдостиstresses
gen. Härteskala f (минералов)
chem. Härteskala f
construct. Härtereihe f
tech. Härteskale f
шкала твёрдости: 14 phrases in 7 subjects
Chemistry3
General1
Geology3
Metallurgy2
Metalworking2
Mining1
Technology2