摩擦力作用于运动着的物体，并使其停止。
一根手指的弹击足够使一个气球加速离去，当气球运动时，一点动力，甚至空气的摩擦力可以很快使它慢下来。
The flick of a finger is enough to make a balloon accelerate away. When moving, it has little momentum and even the friction of the air quickly slows it up.
物体运动，并向上加速度，因为摩擦力方向斜上，值为这个。
It is moving, so sure, it's going to be accelerated so the frictional force is in this direction, has this value.
如果没有摩擦力，那么一个在运动的物体永远也不会停下来。
If there were no friction, an object in (motion) would never come to a rest.
粘性是液体流层问相对运动而产生的摩擦力或阻力。油层间所产生的运动阻力称为粘性摩擦力。
Viscous friction is the fiction, or resistance to relative motion, between adjacent layers of liquid. The resistance of motion between these oil layers is called viscous friction.
摩擦力指的是阻碍运动的一种力。
这种总是阻碍运动的力我们称之为摩擦力。
运动学刚体和其他刚体碰撞时可以将之唤醒，而且，放在其上时，能够对其施加摩擦力。
Kinematic Rigidbodies correctly wake up other Rigidbodies when they collide with them, and they apply friction to Rigidbodies placed on top of them.
在处理颗粒场时考虑到颗粒直径、比重、材料的刚度、摩擦系数等对颗粒运动的影响。
During the treatment of a particle field the effect of particle diameter, specific weight, rigidity of material and friction factor, etc on particle movement has been taken into account.
大量运动部件、滑动摩擦、极短时间内运动方向的变化以及机械冲击等都使摩损加剧。
The great number of moving parts, the sliding friction, the reversal of direction at rapid intervals, and the mechanical shock involved all contribute to severe wear.
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。
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.
特殊的表面结构，增强了摩擦力，创造了更加舒适和安全的运动地面环境。
Special surface structure the friction and creates more comfortable and safe ground environment for the movement.
本文分析了汽车传动轴高速状态下横向振动的稳定性与扭转振动，以及摩擦力、阻尼和花键轴的运动对横向振动的影响。
The stability of transverse vibration in high speed automobile and the influence of torsional vibration, friction, damping and movement of spline shaft on vibration are discussed.
实验发现，棒在颗粒物质中运动时滑动摩擦力具有准周期振荡性质。
It is found that sliding friction between continuous medium and granular materials has a novel speciality of quasi-periods oscillatory.
对机器人的牵引力、运动速度、在不同摩擦系数介质表面上的运动能力、头舱姿态进行了试验。
Experiments are made on locomotion force, velocity, locomotion ability on surfaces with different friction coefficients, and pose of the head cabin.
在进行高山滑雪运动时，雪板与雪地之间的摩擦力、空气阻力以及推雪阻力都是影响高山滑雪运动员滑行阻力的主要因素。
In the alpine skiing, the primary determinant influencing the skiing resistance includes the friction between snowboard and snow, the air resistance and the counterforce from pushing snow.
提出一种基于GA的自适应模糊积分型滑模控制策略，并将其用于具有非线性动态摩擦力的单轴运动控制系统中。
An adaptive fuzzy integral type sliding mode control method based on GA was proposed to control single-axis motion control system with nonlinear dynamic friction.
运动物体在斜面之间的楔紧力和轨道给予的摩擦力的共同作用下迅即制动。
The movement object fast stops by the actions of the wedged forces between the bevel faces and the friction forces given by the orbits.
沉降性浆体中固体颗粒处于滑跳移运动状态时，固体颗粒将受到摩擦力的影响。
When the solid particle was in slipping or jumping motion state in slurry flow, the solid particle will be influenced by frictional force.
摩擦学设计是把运动机械作为摩擦学系统而进行的综合设计，它有特殊的设计准则和知识背景。
The tribology design is an integrated one that assumes machine as tribology system, which has special designing criteria and knowledge background.
用摄动法分析刚球在非线性滑动摩擦力作用下的运动规律。
The perturbation method is used to analyse the motion of the rigid sphere under the action of the nonlinear sliding friction.
由于运动部件之间存在摩擦力，所以实际系统的效率永远小于1。
The efficiency of a real system is always less than 1 because of friction between moving parts.
在无相对运动的情况下，也可以有摩擦力的作用。
Frictional forces may also act when there is no relative motion.
具有主、副气缸运动学上最大相似性的结构参数，可使得主、副气缸的摩擦力和扭矩尽量一致及平稳性更好。
The structural parameters of kinematics has a supreme comparability between primary and secondary air cylinder, and the consistency and stability of torque and friction can be better.
考虑冲击外力、传动间隙、碟形弹簧刚度、阻尼及预压力等因素，仿真得出蜗杆和摩擦片的振动响应曲线，与部件实际运动规律相吻合。
Obtain the vibration response curve of worm and friction discs by simulation calculation, the simulation results accord with the actual device motion rule.
本文抓住刚体无滑滚动的运动学特征，通过分析主动力和静摩擦力各自的贡献，提出一种形象、直观的求解方法。
This paper grasps its kinematic traits and gives a specific and intuitionistic solution through analysing each contribution of main motivity and static friction.
引入滚滑状况下的摩擦力系数，从而求得活塞销运动方程的数值解。
The numerical solution of the equation describing the motion of the floating piston pin is obtained by bringing in the conception of friction force coefficient under slide-roll condition.
油层间所产生的运动阻力称为粘性摩擦力。
The resistance of motion between these oil layers is called viscous friction.
运动部件间的摩擦力使金属磨损，这就缩短了运动部件的使用寿命。
Friction % wears away metal in the moving parts, which shortens their working life.
运动部件间的摩擦力使金属磨损，这就缩短了运动部件的使用寿命。
Friction % wears away metal in the moving parts, which shortens their working life.
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