特殊用法can piercer1.开罐器disk piercer1.盘式穿孔机Mannesmann piercer1.辊式穿轧机, 曼内斯曼式穿孔机three-roll piercer1.三辊穿孔机turf piercer1.草地疏松透气器, 草地更新器two-roll piercer1.二辊穿孔机