Cartons categories: -size type knife, knife edge repair, slotted knife, knife windmill shredders, casual propeller plane knife. Pipeline single-blade and CBN grinding wheel, and so on.
纸箱类：裁纸横切刀、修边刀、开槽刀、风车碎纸机刀、散桨机刀。流水线单刀片及CBN砂轮等。
2
A new type of liquid propeller-single-bladepropeller is discovered and its dynamic equations are established by means of kinematic analysis of the blade and loads applied on the blade.