Sanakirja
Tekoälykääntäjä
Kuvat 10

The science of metals; their extraction from ores, purification and alloying, heat treatment, and working.

Gold smelting workers in Siuna, Nicaragua in the late 20th century

The science of metals; their extraction from ores, purification and alloying, heat treatment, and working.

Casting, the process of pouring molten metal into a mold

The science of metals; their extraction from ores, purification and alloying, heat treatment, and working.

Artefacts from the Varna Necropolis in present-day Bulgaria