機器
automated
blue
building
business
calx
carbonate
complex
concrete
construction
electricity
energy
engineering
environment
environmental
equipment
facility
factory
furnace
giant
industrial
industry
large
lime
limestone
machinery
maintenance
manufacture
manufacturing
plant
pollution
power
process
production
roasting
rotary
rotating
safety
silica
sky
structure
supply
system
technology
tubular
work
workshop