Mahsulot tavsifi
Tashqi nurlanishdan himoyalanishni hisoblash Reja: Reja 1: Nurlanish ta’sirini kamaytirishning asosiy usullari Reja 2: Tashqi nurlanishdan himoya qilish hisoblari Reja 3: Himoya materiallari va ularning qo‘llanilishi Reja 4: Tashqi nurlanishdan himoyalanishning amaliy qo‘llanilishi
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