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PowerStudent
23 Jan 2020, 20:58
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هندبوک برق طراحی، اجرا و نظارت
https://www.instagram.com/p/B7q8juIFQio/?igshid=18jm3f7m6f2ss
AminGashti
📌 ◾آمادگی ازمون نظام مهندسی و نکات نظارتی 🔸️تستهای تاسیسات برقی ساختمان ▫️تست امپدانس حلقه خطای هادی فاز به زمین
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