機器
air
bar
barometer
blowing
cleaning
clock
closeup
compression
compressor
control
cylinder
detail
electric
electrical
energy
engineering
equipment
flow
gas
gauge
industrial
industry
manometer
measure
metal
meter
motor
paint
pipe
pneumatic
power
precision
pressure
pump
rubber
rusty
scale
science
spray
steel
suction
tank
technique
technology
tool
tube
valve
work