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5 Simple Techniques For اداة كشف المعادن

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وضع العملات: يستخدم للبحث عن العملات المعدنية في التربة أو على سطح الأرض. The 1st metal detector was possible the simple electric conduction metallic detector ca. 1830.[forty one] Electric conduction was also used to Find metal ore bodies by measuring the conductivity amongst steel rods driven into the ground. إن https://knox578z0.blog2news.com/33148246/what-does-جهاز-كاشف-المعادن-والذهب-mean

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