| 摘要 |
The vibration device is noteworthy in that it comprises two identical rotating parallel assemblies (E - E1) suitably mounted inside a casing (1), these being arranged in order to be driven in opposite directions by a single drive (control) member (M), each of the assemblies (E - E1) receiving a system (V - V1) capable of subjecting them to a vibratory force with the possibility of adjustment in order to confer on each of the said assemblies the same amount of vibration, thereby ensuring that they are in zero vibratory phase equilibrium along their axis of rotation (2 - 3). <IMAGE>
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