| 摘要 |
A device for applying an electromagnetic field, an electric field, or both, to at least a part of a body, comprises at least a transducer and a generator for applying an ac signal to the transducer. The transducer is adapted for applying to at least part of the body at least part of electromagnetic field or the electric field or both generated by the transducer. The amplitude of the field is time dependent and has a spectrum of frequencies in which some frequencies or frequency areas are more strongly represent than others.
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