英文關鍵字
abstract
barrel
big
construction
coolant
energy
engineering
equipment
external
facility
factory
flow
foundation
heat
heating
heavy
hot
industrial
industry
insulating
insulation
iron
line
manufacturing
massive
metal
mineral
mounted
pairs
pan
pipe
pipeline
pipes
piping
plant
power
reflection
regulating
resources
rusty
sheathing
shot
silver
steel
supply
system
tube
valve
valves
vertically
water