英文關鍵字
cable
closeup
connection
connector
detail
engineer
engineering
equipment
factory
finger
hand
hose
human
hydraulic
industrial
industry
machine
machinery
manufacture
manufacturing
metal
metallic
nut
part
pipe
plant
plastic
plumbing
pneumatic
pressure
process
production
technical
thread
tube
unit
unscrewing
water
wet
work
worker
workplace
workshop