機器
angle
blade
boilersuit
circular
closeup
concept
construct
construction
craft
cut
danger
electric
equipment
flame
grinder
grinding
hand
hot
human
industry
iron
job
manual
manufacturing
men
metal
motion
nobody
occupation
people
person
pipe
power
production
protective
safety
sharp
skill
spark
sparks
steel
technical
technology
tool
turning
wheel
work
worker
workshop