機器
architecture
background
boiler
building
emergency
energy
equipment
extinguisher
factory
fire
frame
home
hot
house
industrial
industry
installation
line
metal
motor
new
object
pipe
pipeline
pipes
piping
plant
power
pressure
pump
pumps
red
room
security
sewer
sign
station
steel
system
technology
treatment
tube
utility
valve
valves
wall
water
white
work