مخترع الورق

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23 فبراير 2013

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اخترع الصينيون الورق في عام 105 بعد الميلاد ، والمخترع هو تساي لان أحد

رجال حاشية الملك حيث أخذ الألياف من النباتات وخلطها بالقطن ثم قام بتجفيفها.

اختراعات واكتشافات

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أخر المواضيع من قسم : اختراعات واكتشافات

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