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
steam
technical
science
heater
house
cold
iron
boiler
gauge
production
line
electrical
cooling
piping
air
hydraulic
maintenance
interior
heating
repair