اختبار طحن الخبث
اختبار آلة طحن. آلة اختبار العالمي, آلة اختبار تأثير طحن عينة فحص المعادن وآلة تلميع In order to obtain a highly reflective surface that is free from scratches and deformation, the specimens must be carefully grinded and polished before they can be examined under the microscope metallographic grinding