英文關鍵字
abstract
architecture
background
black
block
building
business
cement
check
compressive
concrete
construction
cylinders
design
engineering
equipment
factory
floor
fresh
industrial
industry
inside
iron
isolated
machinery
manufacturing
material
metal
mixing
mold
nature
object
plant
production
quality
rock
safety
site
slab
stack
strength
success
technology
test
texture
wall
water
white
work
worker