Machinery gears and cogs in a coal mine
Schlüsselwörter
machinery,
gear,
cog,
coal cellar,
complex,
mining,
work,
mechanical,
industrial,
equipment,
engineering,
technology,
machine,
detail,
operation,
metal,
heavy,
industry,
closeup,
machine-building,
functionality,
part,
component,
interlocking,
intricate,
cog,
part,
steel,
wheel,
gear,
watch,
mechanism,
clock
Deutsch
