機器
accessory
alloy
auto
automotive
cam
car
combustion
connecting
crank
cranked
crankshaft
cylinder
detail
drive
engine
fix
fuel
gear
illustration
machining
manufacture
mechanic
mechanical
metal
motor
oil
outline
part
piston
power
race
repair
ring
rod
shaft
shiny
sketch
speed
sport
steel
stroke
technical
technology
tools
transportation
truck
valve
vehicle