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جهاز كاشف المعادن والذهب Secrets

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ملاحظة: المعلومات والتوضيحات أعلاه هي بيانات الشركة المصنعة. The first metallic detector was most likely The straightforward electric powered conduction metallic detector ca. 1830.[41] Electric conduction was also accustomed to Track down metal ore bodies by measuring the conductivity in between steel rods pushed into the ground. أوتوماتيكي متطور لكشف https://reid887i3.blog-eye.com/32653818/the-definitive-guide-to-اجهزة-كشف-المعادن

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