穿孔：在保持架部门的第四步工序。同时按要求在切出保持架兜孔，维持合适的尺寸。
PERFORATOR: Fourth stage of operation in the cage department. Simultaneously cuts out all pockets required in blank, maintaining proper top dimensions.
穿孔：在保持架部门的第四步工序。同时按要求在切出保持架兜孔，维持合适的尺寸。
PERFORATOR: Fourth stage of operation in the cage department. Simultaneously cuts out all pockets required in blank, maintaining proper top dimensions.
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