The idea of flexible rotor is presented for decreasing slide friction on the contacting surface of the stator and the rotor.

提出并应用了柔性转子的概念，使定子、转子在接触面上的径向相对滑动大为减小。

youdao

If indeed the friction coefficient is independent of surface area, then when I tilt them they should start to slide roughly at the same Angle.

若摩擦系数真的，与接触面积没有关系，那么两者下滑时的角度，应该基本相当。

youdao

According to the friction and wear experimental results of dry slide of carbon steel, this paper analyses the relationships between the wearing amount, types of carbon steel and load.

根据对碳素钢进行的干燥滑动摩擦磨损试验结果，对碳素钢的磨损量、磨损形态与载荷的关系加以分析。

youdao

Then there's the Slide (pictured above) which relies on interesting physics to support the iPad: a heavy high-friction rubber cylinder is pulled out of its tubular compartment under the metallic slope, and it can be placed anywhere on the slope to support the iPad at any desired angle, up to somewhere around 70 degrees -- you can see it and the others in action in the earlier video.

ENGADGET: Just Mobile talks about working with Apple and why it manufactures in Taiwan exclusively