id	keyword
brj-25014	ventilation
brj-25014	grain
brj-25014	air
brj-25014	diameter
brj-25014	storage
brj-25014	number
brj-25014	grain storage
brj-25014	optimization
brj-25014	flow
brj-25014	circulation
brj-25014	duct
brj-25014	field
brj-25014	pile