【机械工程】辊子或滚针轴承【机械工程】滚柱或滚珠形轴承

rice leaf roller, rice leaf folder, {Cnaphalocrocis medinalis} Guenè)

roller and compactor【公路】

spiked roller

roller bearing ball

guide, roller, cable

roller seating angle【机】

feed roller film inking unit

messenger roller office printing machine