| 摘要 |
An aluminium cooking vessel comprises a vessel bottom coupled to a steel plate for providing an electric induction plane heating, the steel plate including a plurality of plate holes and being subjected, about each plate hole to a force applied with an annular pattern to deform the steel plate about each hole with a Z deforming arrangement, the vessel material, displaced as the steel plate is deformed assuming a mushroom arrangement to cover the perimeter of the plate holes. |
