機器
accuracy
assembly
automobile
automotive
background
black
close up
cylinder
disassembling
double
employees
engineering
equipment
exposure
factory
head
heat
hot
industrial
industry
iron
job
laser
maintenance
mechanic
mechanical
metal
metallic
mold
moto
motorcycles
operator
part
precision
process
product
production
repair
spare
sparks
steel
technical
technology
transport
weld
welding
work
worker
workshop