ሳይንስየኒውክለር ጨረር ቴክኖሎጂን የተጠቀመው የጤፍ ምርምር To play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoሳይንስTesfalem Waldyes Erago MMT10 ኅዳር 2012ረቡዕ፣ ኅዳር 10 2012https://p.dw.com/p/3TP8rማስታወቂያ