機器
arm
assembly
auto
automate
automated
automation
automobile
automotive
cars
closeup
construction
electronics
engineering
equipment
factory
futuristic
heavy
hydraulics
industrial
industry
line
machinery
manufacture
manufacturing
mechanical
metal
modern
nobody
part
plant
platform
production
robotic
robots
row
safety
service
sparkles
sparks
steel
technology
transportation
welder
welding
working