機器
background
bicycle
bike
cassette
chain
chainring
chrome
circle
closeup
cogs
cogwheel
component
cycling
disc
disk
drive
equipment
gear
gearing
gearshift
gearwheel
group
iron
isolated
macro
mechanical
mechanics
metal
metallic
mountain
mtb
nobody
object
part
pinion
rear
ring
set
spare
sports
sprocket
stainless
steel
system
teeth
train
transport
wheel
white