機器
alloy
automobile
background
benzine
block
cam
camshaft
car
chrome
chromium
circle
complexity
cylinder
diesel
engine
engineering
equipment
fabrication
gasoline
gear
greasy
head
inside
intake
iron
lardy
machinery
mechanic
metal
metallic
motion
motor
objects
oil
overhaul
part
petrol
power
repair
repairing
seated
section
shiny
silver
spare
stainless
steel
technology
transportation
valve
vehicle