英文關鍵字
accuracy
action
arc
automated
automation
brightly
construction
copy
effort
electronics
engineering
equipment
factory
horizontal
industrial
industry
iron
machine
machinery
manual
manufacture
manufacturing
metal
metalwork
modern
occupation
plant
power
pressure
production
reinforcement
resistance
safety
science
service
sheet
shop
skill
sparks
spot
steel
tech
technology
tool
weld
welder
welding
work
worker
workshop