英文關鍵字
abstract
architecture
background
building
business
chemical
concrete
construction
design
development
energy
engineering
environment
equipment
factory
fisheye
floor
gas
heavy
industrial
industry
inside
insulation
interior
machine
manufacture
manufacturing
metal
modern
nobody
oil
path
pipe
pipeline
pipes
plant
power
production
road
shiny
stairway
steel
step
structure
system
tank
technology
tube
valve
work