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

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

    出版 2014
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    电子 本书章节
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    The echo-impulse position detection by the dual-frequency sensing method

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

    出版 2015
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    电子 本书章节
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    Acoustic borehole depth-gauge with the dual-frequency sensing method

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

    出版 2016
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    电子 本书章节

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