برای اولین بار یک عامل بیماریزای کشنده به نام «ویروس موربیلی» آب بازسانان در آبهای قطب شمال...
روز: دی 24, 1404
برای دههها، مرمتکاران از برسهای کوچک و سایر ابزارهای ملایم برای تمیز کردن دقیق آلودگی از بناهای...
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