機器
annealing
auto
automobile
automotive
bearing
bearings
belt
cam
car
chain
color
crankshaft
double
duplex
engine
engineering
equipment
gear
industrial
iron
isolated
link
mechanic
mechanical
mechanism
metal
metallic
motion
motor
oil
overheated
part
precision
repair
series
service
servicing
shaft
spline
steel
technology
teeth
timing
transportation
used
vehicle
vintage
wastage
wheel