機器
activity
adult
angle
background
bicycle
careful
circular
clamp
construction
cut
engineering
equipment
factory
flash
grinder
hand
horizontal
industrial
industry
iron
job
light
male
man
manual
manufacturing
men
metal
motion
night
occupational
people
power
production
protection
protective
red
safety
sharpening
spark
steel
technology
tool
welder
welding
work
worker
workshop
year