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Agricultural machinery
9
Tobacco -- Harvesting
7
Vibration
6
Employees -- Workload
4
Acceleration (Mechanics)
3
Harvesting machinery
3
Hydraulic machinery
3
Machinery
3
Agricultural engineering
2
Angles (Geometry)
2
Crop yields
2
Force and energy
2
Heart rate monitoring
2
Tobacco -- Research
2
Tobacco curing
2
Air
1
Chain saws
1
Computers
1
Cotton
1
Curing
1