Several modifications have been made in this technique, and it is now generally referred to as friction spinning.
对这处生产工艺已经做了很多改进，目前一般称之为磨擦纺纱。
On dry surfaces, the front of a spinning sphere generates more friction than the back, and the sphere veers in a direction different from that of the rotational vector.
在干燥表面上，球体运动时前方受到的摩擦力比后方要大，且其旋转方向和滑行方向是不同的。
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