機器
blade
circle
circular
construction
cut
diamond
disc
disk
drill
electric
engineering
equipment
factory
fire
flame
flash
grinder
hand
industrial
industry
iron
job
light
manual
manufacture
manufacturing
mechanic
metal
power
production
protection
repair
round
saw
spark
speed
steel
tech
technical
technology
tool
treatment
welder
welding
wheel
work
worker
workshop