ahlam1399
03-11-2016, 10:52 PM
للإفادة ......
http://i87.servimg.com/u/f87/13/67/58/26/physic12.png
الصور المرفقة http://www.djelfa.info/vb/images/attach/jpg.gif physic12.jpg‏ (http://www.djelfa.info/vb/attachment.php?attachmentid=121587&d=1457717443) (8.1 كيلوبايت)
http://i87.servimg.com/u/f87/13/67/58/26/physic12.png
الصور المرفقة http://www.djelfa.info/vb/images/attach/jpg.gif physic12.jpg‏ (http://www.djelfa.info/vb/attachment.php?attachmentid=121587&d=1457717443) (8.1 كيلوبايت)