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CNY 54.90

CNY 54.90 0%

مجموعة تعليمية للعلوم والتكنولوجيا والهندسة والرياضيات (STEM) لتوليد الطاقة الهيدروليكية والرياحية بنظام مزدوج، تجربة إلكترونية للدوائر الكهربائية للأطفال

4.9
|
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