機器
action
blade
carbon
circle
circular
concept
construction
cut
cutting
danger
diamond
die
disk
electric
engineering
equipment
factory
fiber
fire
flame
grinder
hand
hot
industrial
industry
iron
job
light
man
manual
manufacture
manufacturing
mechanic
metal
metallic
motion
part
pipe
power
production
protection
rectangular
round
safety
saw
site
spark
speed
spin
steel
technical
technology
tool
treatment
tubing
unsafe
use
welding
wheel
work
worker
working
workshop