英文關鍵字
business
chemical
chimney
complicated
construction
contemporary
energy
engineering
environment
equipment
facility
factory
fuel
gas
gasoline
hard
heavy
hitech
indoors
industrial
industry
machine
manufacturing
metal
modern
nobody
petrochemical
petrol
pipe
pipeline
platform
power
processing
production
refinery
stainless
station
steel
structure
supply
system
technology
valve