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  1. 1

    Mathematical analysis of the echo-impulse position detection by the dual-frequency sensing method

    Published 2014
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    Electronic Book Chapter
  2. 2

    The echo-impulse position detection by the dual-frequency sensing method

    Published 2015
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    Electronic Book Chapter
  3. 3

    Acoustic borehole depth-gauge with the dual-frequency sensing method

    Published 2016
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    Electronic Book Chapter