機器
automated
building
business
calx
carbonate
chamber
closeup
combustion
complex
concrete
construction
contemporary
electricity
energy
engineering
environment
environmental
equipment
facility
factory
furnace
hot
industrial
industry
kiln
lime
limestone
machinery
maintenance
manufacture
manufacturing
plant
pollution
power
process
production
roasting
rotary
rotating
safety
silica
structure
supply
system
technology
workshop