不应该允许它接触地面或地板，以及与物体摩擦。
It should not be allowed to touch the ground or floor, nor to brush against objects.
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。
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.
物体表面越粗糙不平，它的分子就越容易更多地与接触表面的分子相粘合，因此就会产生更大的摩擦力。
The more rough and jagged something is, the more easily more of its molecules will come into contact with molecules on the surface it touches, and thus the greater force of friction they will exert.
水钉的作用，使土钉体外表面与土体界面接触粘结力与摩擦阻力显著降低。
By action of water to nail, Bond between soil and nail a was obviously reduced.
对于船艏高能搁浅的情况，损伤路径会向船体外侧偏离，船舶与礁石之间的接触由剧烈的冲击逐渐过度到侧向挤压和滑动摩擦；
For bow hard grounding, damage path will go toward the side of ship hull, and the contact between the ship and the rock will change gradually from intense impact to lateral press and slip friction.
应用统计学方法对静态接触面积与动态摩擦力进行了相关分析，结果表明二者具有显著水平的线性相关关系。
Statistic method is used to analyze the correlation between static contact area and dynamic friction force. The results clarify that there is a linear correlation with significant level.
此外还分析了磨砂玻璃板接触面积与摩擦系数的关系。
Besides, the relationship between the contacting area and the glide friction was analyzed and discussed.
总的粘着摩擦系数被表示为弹性接触区与塑性接触区的粘着摩擦系数的组合。
The total adhesive friction coefficient is expressed as a combination of adhesive friction coefficients in elastic and plastic contact regime.
由于惯性筒上的曲折槽与销间的为线接触甚至点接触，因此针对此处较为特殊的摩擦系数进行研究。
Because of the line contact or even point contact between zigzag slot and pin, its friction is different and needs to be studied.
在另一实施例中， 一压电元件与一阻力件相接，该阻力件与该杆件以静摩擦力相接触而固定；
One other embodiment has one piezoelectric element, one resistance part connected to the piezoelectric element and one rod normally fixed by means of static friction force.
利用单峰接触的模型，建立了相对湿度与摩擦力关系的公式。
The maximum static friction force goes up with the relative humidity…
利用单峰接触的模型，建立了相对湿度与摩擦力关系的公式。
The maximum static friction force goes up with the relative humidity…
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