機器
angle
blade
building
chips
circular
construction
coolant
cut
cutter
cutting
danger
disc
electric
electrical
engineering
equipment
factory
fitter
gloves
grinder
grinding
hand
hot
human
industrial
industry
instrument
iron
job
machining
man
manual
metal
pipe
pipes
power
rotate
safety
saw
sparks
spin
steel
technical
technology
tool
tools
work
worker
workshop