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- passive frictional force 被动磨擦力
- Because of the ice and the snow, it has less frictional force. 再加上冰雪在减少磨擦力。
- This frictional force causes the velocity of an object to decrease. 这种摩擦力使物体的速度减低。
- As soon as sliding begins, it is found that the friction force decreases. 人们发现，滑动一开始，摩擦力就减
- The observed friction force is the force required to break these tiny welds. 我们观察到的摩擦力，就是破坏这些细微的焊接点所需要的力。
- The frictional force between a particle and fluid counterbalances the weight of the particle. 颗粒与流体之间的摩擦力与其重量相平衡。
- Frictional forces may also act when there is no relative motion. 在无相对运动的情况下，也可以有摩擦力的作用。
- Ultrasonic motor (USM) is a new type motor which applies frictional force as the driving source. 摘要超声波电动机是以摩擦力作为驱动源的新型电动机。
- The forces due to friction are called frictional forces. 由于摩擦而产生的力称之为摩擦力。
- An alternative model ascribes the stream to frictional forces. 另有一种模型将气流归因于摩擦力。
- In such a situation he would give anything for the sake of just a little friction force. 在这样的情况下，他会不惜任何代价来换取那怕只是一点儿摩擦力。
- When the friction force acts alone, the total mechanical energy is not conserved. 当只有摩擦力作用时，总机械能就不守恒。
- For sliding contact, the coefficient of kinetic friction Uk is defined as the ratio of the frictional force to the normal force. 滑动接触时，动摩擦系数Uk的定义是摩擦力与法向力的比率。
- The distribution of frictional force on the rolling plate surface and the effects of friction on rolling process are discussed. 材料的等向强化模型、运动强化模型和混合强化模型对中厚板轧制过程的影响;
- An iterative algorithm is advanced to work out contact length and vertical load and frictional force distribution in longitudinal direction. 采用迭代算法计算了印迹长度及垂直载荷与摩擦力在纵向的分布。
- Clogging of vibrating screen with shaking plate in the material grinding field is overcome by analyzing the problems and using the frictional force. 通过分析磨料行业中摇板振动筛网孔堵塞的原因，利用摩擦力的作用，采用激振法解决摇板振动筛网孔的堵塞。
- This nonlinear change in friction force over a small change in velocity results in uncomfortable feeling when people hitchhike hydraulic lift. 该摩擦力的非线性改变使速度产生变化,导致人们在搭乘液压电梯时产生不舒适感。
- The friction force is therefore called a nonconservative or a dissipative force. 因此，摩擦力称为非保守力或耗散力。
- What effect does this have no the friction force between the opposing lineman's feet and the ground? 这对这名边线防守队员的脚与地面之间的摩擦力产生了怎样的影响？
- The friction force between Si3N4 probe of AFM with WS2 nanotube is lower than that with MoS2 powder. 在室温大气下干摩擦时原子力显微镜的S3iN4探针与WS2纳米管之间的摩擦系数小于与MoS2粉末的摩擦系数。
