英文關鍵字
arc
automation
blue
building
business
closeup
cutter
engineering
entrepreneur
equipment
factory
flash
fluid
focusing
indoor
industrial
industry
interior
job
join
labor
laborer
light
machine
machinery
manufacturing
mechanic
mechanical
mechanism
metal
miller
overall
people
plant
production
profession
retro
room
skill
spark
steel
technician
technology
tool
trained
welder
work
worker
workshop