sk
Viewpoint Science
16.8. 16:40
NHK WORLD-JAPAN
10 minút
When we line up some bicycles, we discovered a lot of interesting things. Why is the shaft of a handlebar angled?
Viac informáciíO programe
anglicky
When we line up some bicycles, we discovered a lot of interesting things. Why is the shaft of a handlebar angled?