英文關鍵字
air
alabbuga
automatic
automation
black
blade
cistern
concrete
corrugated
corrugation
energy
engineer
equipment
expertise
factory
form
forms
grained
granular
granulate
granule
industry
large
machine
making
manufacture
manufacturing
natural
pipe
pipes
plant
plastic
polymer
pour
pressure
process
production
recycling
resource
sewer
special
stack
technology
tool
tubes
ventilation
waste
water
work
workpiece