Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
검류기는 전류의 존재를 감지하는 데 사용됩니다.geomnyugineun jeonryuui jonjaereul gamjihaneun de sayongdoemnida.A galvanoscope is used to detect the presence of electric current.