id	keyword
brj-22220	stalk
brj-22220	stalk contact
brj-22220	coefficient
brj-22220	experiment
brj-22220	friction
brj-22220	cotton stalk
brj-22220	angle
brj-22220	parameters
brj-22220	model
brj-22220	μs(k
brj-22220	contact parameters
brj-22220	repose
brj-22220	design