英文關鍵字
industrial
technology
pipeline
construction
industry
heat
engineering
pipe
metal
system
steel
equipment
electric
work
machine
tube
valve
energy
manufacture
water
factory
power
building
tool
pressure
pump
room
station
control
gas
gauge
repair
science
heater
boiler
cooling
electrical
production
line
iron
air
interior
piping
maintenance
steam
cold
technical
house
hydraulic
heating