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Uploaded by yin8421 on Feb 28, 2009
自己做的,以一定頻率去晃動外圈,內部的兩個圈會一直轉動下去
Science & Technology
Standard YouTube License
thats easy
hulago1234 4 months ago
please post link to the background
DjPrehab 4 months ago
Nice backround picture on ur computer
TeChNoBeAtJaM 1 year ago
Load more suggestions
thats easy
hulago1234 4 months ago
please post link to the background
DjPrehab 4 months ago
Nice backround picture on ur computer
TeChNoBeAtJaM 1 year ago