3 ms·
Someone used this principle to create this strange bicycle: http://www.china.org.cn/china/photos/2009-05/07/content_17738257.htm http://www.china.org.cn/china/p
by jasondavies 16y ago
Someone used this principle to create this strange bicycle: http://www.china.org.cn/china/photos/2009-05/07/content_17738257.htm http://www.china.org.cn/china/photos/2009-05/07/content_1773...