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Book Simple Machines And Engines

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Simple Machines And Engines
Qr Code Simple Machines And Engines

Simple Machines And Engines

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Category: Simple Machines [Edit]
Language: Arabic
Publisher:  مكتبة لبنان ناشرون السلسلة: العلوم المبسطة
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Pages: 53
Rank: 248,591 No 1 most popular
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هل تعلم أنك تستعمل آلة بسيطة (وهي الرافعة أو العتلة) كلما تضغط زراً كهربائيا أو تدير مفتاحاً في قفل أو تعزف الحديقة بالمنكاش؟ في هذا الكتيب الممتع ستتعلم الكثير عن الآلات البسيطة بمساعدة اختبارات وتجارب سهلة ومأمونة-ستتعلم كيفية استخدام البكرات لرفع الأوزان الثقيلة وستكتشف فائدة استعمال كريات المحامل في عجلات دراجتك وستعرف سبب اندفاعك إلى الأمام (بقوة الاستمرار) عندما تتوقف السيارة كذلك ستتعلم أشياء أساسية عن عمل الآلة التجارية والمحركات ذات الاحتراق الداخلي والمحركات النفاثة‍

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