id	keyword
agsci-1143	seed
agsci-1143	metering
agsci-1143	device
agsci-1143	air
agsci-1143	pressure
agsci-1143	seed metering
agsci-1143	drum
agsci-1143	hole
agsci-1143	metering device
agsci-1143	chamber
agsci-1143	figure
agsci-1143	agricultural
agsci-1143	suction
agsci-1143	fan
agsci-1143	inlet
agsci-1143	air chamber
agsci-1143	blade
agsci-1143	precision