| http://www.w3.org/ns/prov#value | - ily parallel, and including means to fill or empty selective arrays of these hollow tubes to selectively control the natural frequency of the cantilever beam as a function of the frequency of vibration of the vibration prone structure upon which it is fixedly mounted, and so that the tube array to be fluid filled is selected so that the cantilever beam effective mass is varied to selectively absor
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