機器
butt
circle
circular
construction
craft
cutter
cutting
disc
electric
engineering
equipment
fabrication
factory
grinder
grinding
heavy
industrial
industry
iron
job
labor
male
manual
manufacture
manufacturing
mechanical
metal
metalwork
part
pipe
power
production
protection
repair
repairing
safety
saw
seam
spark
steel
technical
technology
tool
tube
welder
welding
work
worker
workshop