| 摘要 |
A plurality of circular cross section elongated vibrometer reeds each having a predetermined frequency response to a vibration in a given plane are secured to a vibration transmission medium in predetermined orientations. The medium is secured in vibrating communication with a machine frame, for example, a helicopter frame, to transmit frame vibrations to the reeds. Each reed is oriented to respond to at least one vibration associated with a known source of vibration in an environment of complex vibrations produced by a plurality of sources in the machine.
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