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Class 13 | তাপগতিবিদ্যার ২য় সূত্র,প্রত্যাবর্তী ও অপ্রত্যাবর্তী প্রক্রিয়া,তাপ ইঞ্জিন(Heat engine)

HRI Team

28 May, 2022

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