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نیم عمر 21 May 2012 | 11:02 pm

half-life the time in which a radioactive substance will lose half of its activity through disintegration

راکتور اتمی 19 Apr 2012 | 12:51 pm

ATOMIC EXPLOSION ANIMATED GIF 19 Apr 2012 | 12:39 pm

شکافت هسته ای 19 Apr 2012 | 12:33 pm

دیاپازن 19 Apr 2012 | 12:04 pm

تپ 19 Apr 2012 | 11:46 am

امواج 19 Apr 2012 | 11:43 am

Simple_harmonic_motion_animation 19 Apr 2012 | 11:41 am

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