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天外科技3D To Space & Back 3D
心臟起搏器內藏的電池極為輕巧及耐用，最初它用於太空探測器內，以確保探測器能長時間運作。
The battery inside a pacemaker is very tiny and long lasting. It was first developed for use in a space probe to ensure that the equipment can operate for a long period.
■ 資料提供︰香港太空館(Hong Kong Space Museum)
隔星期五見報
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