機器
automotive
background
belt
black
chain
chrome
cog
connection
detail
device
drive
electric
electrical
energy
engine
engineering
equipment
gear
industrial
industry
iron
machinery
manufacturing
mechanic
mechanical
mechanism
metal
metallic
motor
motorized
new
part
performance
power
pulley
repair
rubber
service
srew
steel
technical
technology
timing
tool
transmission
transportation
valve
vehicle
wheel