自製太陽能手電筒 - 自行車
By Ursula
at 2012-04-29T00:00
at 2012-04-29T00:00
Table of Contents
1.自製太陽能手電筒除了太陽能板和燈泡之外還需要準備什麼嗎?(我已經買了太陽能板了規格是5.5V1W)2.充電電池可以直接用太陽能板充電?
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自行車
All Comments
By Hedwig
at 2012-04-29T15:33
at 2012-04-29T15:33
By Jacob
at 2012-04-30T03:35
at 2012-04-30T03:35
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