英文關鍵字
assembly
builder
business
change
channel
company
construction
electrode
engaged
engineering
enterprise
equipment
facilities
factory
fire
flame
flash
glove
glow
gondola
grinder
hand
industry
iron
job
join
light
machine
manufacturing
metal
metaldesign
metalwork
office
repairing
safety
skill
smoke
soldering
steel
team
technology
tig
tool
torch
welder
welding
weldingelectric
wizard
work
worker