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踩一下會亮的那種是有裝一個鈕扣電池，電池沒電了一樣不亮現在壓電發電效率有這麼好嗎?假如是用壓電材質來發電，這樣12000元才有價值嘛
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Reader Comments (Page 1 of 1)
jakelian @ May 21st 2008 12:53AM
踩一下會亮的那種是有裝一個鈕扣電池，電池沒電了一樣不亮
現在壓電發電效率有這麼好嗎?
假如是用壓電材質來發電，這樣12000元才有價值嘛