[هُدوء آلفَجر]

سلسلة ميكانيك مع الحل
https://drive.google.com/file/d/0By5...5WbVJZblE/view
الحل
https://www .youtube .com/watch?v=tCY0GB821TE
https://www .youtube.com/watch?v=3DK9uiKsLfE&t=0s
https://www. youtube.com/watch?v=0dqNMAEGl1Q&t=17s
https://www .youtube.com/watch?v=Kwl9xZWzaaE&t=0s