機器
circle
circular
construction
craft
cutter
cutting
disc
engineering
equipment
fabrication
factory
grinder
grinding
heavy
industrial
industry
iron
labor
machine part
manual
manufacture
manufacturing
material
mechanical
metal
metalwork
metalworking
part
pipe
production
repair
repairing
round
safety
saw
seam
spare
spark
steel
tool
welder
welding
work
worker
workshop