機器
axle
bike
brake
caliper
chopper
circle
clean
closeup
component
detail
disc
disk
drive
engine
equipment
fast
fix
front
garage
industry
maintenance
mechanic
mechanical
metal
metallic
modern
motion
part
power
race
rear
repair
replacement
road
round
safety
service
spare
speed
sport
steel
stop
suspension
technology
transport
transportation
travel
wheel