英文關鍵字
air
auto
automobile
background
car
closeup
compressed
compressor
concept
condenser
conditioner
conditioning
control
cool
cooling
drier
engine
equipment
evaporator
expansion
gas
glove
hands
industry
machine
metal
modern
motor
object
old
power
receiver
refrigerant
repair
service
switch
system
technology
tool
tube
valve
vehicle