機器
artificial
automated
automation
background
business
chemistry
clean
complex
concept
construction
conveyor
detail
electric
engine
engineering
equipment
factory
gear
industry
interior
labor
large
light
line
machinery
manufacture
manufacturing
mechanic
metal
modern
nobody
objects
operation
plant
production
recycle
refinery
safety
science
storage
structure
technology
tool
valve
warehouse
workplace
workshop