歯車
Cogwheels
White cogwheels connected to a red one
Various clock bits on white
Intricate metallic mechanism.
Gear wheels
銀色の機械部品の歯車
Red Gears
機械
木の葉と歯車
Machine cogs
チェーンと歯車
Gear wheel
Close-up of gears
Metal cogs
Gear and a colorful sphere
ギア
機械イメージ
Machine cog
Close up of Two Clogs
Cogwheel, close-up
Cog and gear wheels with globe in middle
葉
葉と歯車
Interlocking cogs, close up
Germany, Baden-Wuerttemberg, Constanze, detail of old cogs
Clockwork
部品
Parts of bike
産業
Cogs and gears
Connected jigsaw pieces
Connecting jigsaw pieces
Bicycle wheel