英文關鍵字
air
apartment
background
barometer
bathroom
boiler
bowl
closeup
consumption
control
cooking
device
dial
economy
energy
engineering
equipment
finger
flow
food
fuel
gas
gauge
healthy
home
hygiene
indicator
industrial
industry
instrument
isolated
kitchen
machine
manometer
measure
measurement
measures
metal
meter
old
pipe
pipeline
power
pressure
pump
scale
seals
sewerage
steam
supply
technologies
technology
tool
urban
valve
wash
water