Four stacks of rectangular metal bars arranged in a grid pattern on white background
Schlüsselwörter
stack,
rectangular,
metal,
bar,
block,
cube,
silver,
gold,
black,
copper,
brass,
chrome,
steel,
aluminium,
zink,
tin,
bronze,
nickel,
pewter,
lead,
iron,
cobalt,
titanium,
magnesium,
tungsten,
platinum,
iridium,
osmium,
ruthenium,
technetium,
europium,
erbium
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