Considerations To Know About كشف المعادن
ملاحظة: المعلومات والتوضيحات أعلاه هي بيانات الشركة المصنعة.The first metal detector was likely the simple electric conduction steel detector ca. 1830.[41] Electrical conduction was also used to Identify metal ore bodies by measuring the conductivity among steel rods driven into the bottom.في ه�