natural radioactivity – Meaning and Explanation

Part of speech :

Urdu Meaning (اردو معنی)

قدرتی تابکاری ۔ اگر کوئی مادہ از خود تابکاری کرتا ہے تو اس کے عمل کو قدرتی تابکاری کہتے ہیں ۔

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