機器
arc
automated
automation
automotive
clamping
close up
cnc
computer
connection
connector
engineer
factory
fixation
gas
handyman
heating
industrial
industry
install
installer
insulation
line
machinery
manufacture
manufacturing
mechanic
metal
modern
operator
pipe
pipeline
piping
plant
plumbing
production
ring
seam
smelt
steel
tack
technology
tube
weld
welding
work
worker
workplace
workshop