英文關鍵字
aggregate
agricultural
air
auto
automobile
blue
business
car
compressor
detail
diesel
dieselengine
drive
engine
equipment
exhibition
expo
fast
fender
filter
front
fuel
full
generator
heavy
hood
industrial
industry
machine
machinery
mechanic
mechanical
metal
motor
new
oil
piston
power
radiator
repair
show
steel
technician
technology
tractor
transportation
truck
tube
valve
vehicle