在劉謙身上通電?不可能!更何況要產生電流必須要有導電回路
所有跟帖:
• 就是說,導電體兩端要有電壓(電勢差)才能產生電流 -競選- ♂ (0 bytes) () 03/06/2010 postreply 06:53:14
• 就是說,導電體兩端要有電壓(電勢差)才能產生電流 -競選- ♂ (0 bytes) () 03/06/2010 postreply 06:53:14
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