機器
abraum
agriculture
basin
bath
bottom
bright
business
chemical
closeup
complex
concentration
deposit
development
ecology
equipment
extreme
factory
fertilizer
floatation
industrial
industry
machinery
material
mineral
mining
ore
organic
pipe
plant
potassium
process
production
purification
red
reservoir
residual
resource
rock
salt
separation
solid
solution
structure
suspension
sylvinite
technology
water
work
workshop