books sand blasting
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اللفح بالرمل (Info)
اللفح بالرمل:- إزالة الشوائب السطحية من الأجسام الفلزية وذلك بتسليط جسيمات من الرمل على سطوحها تحت ضغط شديد، فينتج عن ذلك حت متحكم فيه. (معجم الهيدرولوجيا)
