機器
aerodynamics
air
aluminium
background
blade
cold
conditioner
conditioning
construction
cool
cooling
ductwork
electric
engine
engineering
equipment
factory
fan
flow
heat
hvac
industrial
industry
isolated
machinery
metal
motor
pipe
plant
power
propeller
shaft
steel
structure
system
technology
truss
turbine
vent
ventilation
ventilator
warehouse
white
wind