| 摘要 |
An apparatus comprises a housing, a core located in the housing, a coil unit associated with the core and located in the housing, and a backing plate made of a high-permeability material. The apparatus may be used for generating high clamping forces between materials that are interposed between the core and the backing plate such that manufacturing operations can be carried out. The core has a cross section with an elongate shape. The coil unit is configured to generate magnetic fields and has the elongate shape.
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