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Void detector

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#1

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10-21-2021, 04:00 PM

liudengyuand liudengyuand is offline

liudengyuand is offline

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Void detector

The world's detector enthusiasts, everyone good! Who knows a simple circuit that can detect underground empty? Do not be as a probe radar then complex, can detect the depth of the ground three smear, the hole size has a cubic meter, who can help me and thankful

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#2

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10-21-2021, 05:52 PM

Pahom

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#3

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10-25-2021, 04:03 PM

liudengyuand liudengyuand is offline

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ok

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