機器
alloy
auto
automobile
automotive
bearing
block
car
carving
chain
crank
crankshaft
cylinder
diesel
energy
engine
engineer
engineering
equipment
filter
fuel
garage
gear
industrial
industry
iron
mechanic
mechanical
metal
metallic
motor
oil
part
piston
power
powerful
repair
service
set
shop
steel
technician
technology
transport
transportation
valve
vehicle
wheel