两个相互接触并挤压的物体,当它们发生相对运动或具有相对运动趋势时,就会在接触面上产生阻碍相对运动或相对运动趋势的力,这种力叫做摩擦力。 摩擦力的方向与物体相对运动或相对运动趋势的方向相反。 固体表面之间的摩擦力的来因有两个:固体表面原子、分子之间相互的吸引力(化学键重组的能量需求,胶力)和它们之间的表面粗糙所造成的互相之间卡住的阻力。
而要取得更好(Better)的上前的摩擦力(Friction)即是借助脚步给大地一个向后的力,作用力与反作用力道理,自然大地会给脚面一个上前的摩擦力.
基于6322个网页-相关网页
...s 进行舱压与摩擦力实验:密苏里大学 (University of Missouri) 的农业机器课程,使用 Lego Mindstorm 组合进行摩擦力 (Traction)、压舱 (Ballasting),与自动化载具概念的教学。 详阅全文 >>
基于26个网页-相关网页
静摩擦力 Static Friction ; force of static friction ; breakout friction
摩擦力显微镜 LFM ; FFM ; Friction Force Microscope ; Lateral Force Microscope
表面摩擦力 skin friction ; [力] force of surface friction ; surface friction
动摩擦力 kinetic friction force ; kinetic force of friction ; Dynamic Friction
滑动摩擦力 sliding friction ; force of sliding friction ; sliding frictional force
滚动摩擦力矩 moment of rolling friction ; rolling friction torque
滑动摩擦力矩 sliding friction torque ; moment of sliding friction
内摩擦力 internal friction ; [力] anelasticity
摩擦力结 friction knot
Superficial friction of airflow.3.
2.气流对霜层表面的摩擦力。
参考来源 - 空气冷却器气动除霜的研究This method may have the potential in prediction of the transport properties (such as friction, wear, lubrication, permeability, thermal and electrical conductivity, etc.
本方法可用来预测粗糙表面的其它输运性质,如摩擦力、磨损、润滑、渗透率和热导率或电导率等。
参考来源 - 分形理论的若干应用·2,447,543篇论文数据,部分数据来源于NoteExpress
航天飞机重返地球大气层时因有摩擦力而减慢速度。
The force of friction slows the spacecraft down as it re-enters the earth's atmosphere.
磁悬浮不依赖于车轮在轨道上的摩擦力。
风向在城市里也会改变,因为建筑物增加了它们周围流动的空气的摩擦力。
Wind movements are also modified in cities because buildings increase the friction on air flowing around them.
That means the force you're applying is cancelled by another force, which has got to be the force of friction.
意味着你施加在物体上的力被另一个力抵消了,这个力就是摩擦力
This little felt thing there is just to avoid too much friction from building up with the plastic or to keep it slightly separated from the case, but that's it. That's all there was to those things called floppy disks.
这种毡制品的目的是避免,由塑料组成所产生的摩擦力,或者保持稍微的距离,这就是我们要说的,软盘的全部内容。
So force of friction is yet another force.
摩擦力就是另外一种力
应用推荐