機器
blade
circle
circular
construction
cut
diamond
die
disc
electric
engineering
equipment
factory
fire
flash
grind
grinder
horizontal
industrial
industry
iron
light
manual
manufacture
manufacturing
mechanic
metal
occupation
power
production
protection
repairman
round
safety
saw
sawing
spark
speed
spin
steel
structure
technical
technology
tool
treatment
turning
welding
wheel
work
workshop