???? ??????? ????????? ????????? ?? ????? ????? ????????????? ?? ??? ?????? ??? ????? ?????? ?? ???? ????????. ??? ?????? ??? ???? ???????? ?? ????? ?????? ??? ?????? ?? ??? ?????? ??? ?????.On account of eddy currents induced inside the metal, a sign is detected when steel is current. The reality that each metal has a distinct period response when… Read More