الموضوع دا يمكن يهمكhttp://inhabitat.com/mit-develops-cheap-lightweight-penny-sized-microthruster-for-satellites/ST2EB
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الموضوع دا يمكن يهمك
http://inhabitat.com/mit-develops-cheap-lightweight-penny-sized-microthruster-for-satellites/
ST2EB
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