The frictional force remains constant, dependent on the friction, the kinetic friction coefficient, is always the same...
摩擦力不守恒，它取决于摩擦力，动能摩擦系数，一直是相同的。
If I look at this result — the sum of gravitational potential energy and kinetic energy is conserved - for gravitational force — then it is immediately obvious where we put the zero of kinetic energy.
如果看这个结果-，重力势能与动能之和，在重力作用下，是守恒的-，马上，很明显的发现，动能为0的地方。
Momentum is conserved, because there was no net external force, so now kinetic energy is also conserved.
动量是守恒的，因为它不受外力，因此动能也是守恒的。
Kinetic energy can be destroyed, but momentum cannot be destroyed in the absence of a net external force on the system as a whole.
动能可以被毁，但是动量不能，在整个系统外力，不存在情况下。
The force and moment exerted on the solid body are expressed as the rate of change of the first-and second-order kinetic vorticity moments, respectively.
作用在任意运动物体（系）上的力和力矩可以分别表示成流场中动力学涡量的一阶矩和二阶矩随时间的变化率。
Then the inertia force is reduced by the inconstant acceleration, so that the static rigidity of the machine is raised and the kinetic performance of the machine is improved.
通过变加速方法降低惯性力，提高了机床的静刚度，改善了机床的动力学性能。
This results in braking force , and the power recovered from the kinetic energy is fed back to the battery.
这在制动力的结果，收回的权力从动能反馈给电池。
It also studied general variation regularities of wave force, added mass and added damping, TLP's kinetic respondence based on engineering examples and got some valuable conclusions (see text).
基于工程实例，分别研究了TLP波浪力、附加质量与附加阻尼、TLP的动力响应的一般规律，得到了一些富有工程意义的结论(详见正文)。
The energy conversion that goes to the rotational kinetic energy from the divergent kinetic energy is mainly accomplished through Coriolis force effect.
散度风动能向旋转民动能的转换主要通过柯氏力的作用来实现。
To the kinetic interceptor with lateral impulse thrust and aerodynamic force, it is required to solve the problem of combined fire of motors for attitude control.
针对具有侧向脉冲推力和气动力复合控制的动能拦截弹，需要解决姿控发动机的组合点火问题。
The adsorption forces on the surface of acidified alkaline residue are mainly dipole bond force and hydrogen bond force. The adsorption process can be simulated by the first order kinetic equation.
酸化碱渣表面吸附作用力主要为偶极间力和氢键力，吸附过程可用一级动力学方程模拟。
It is pointed out that translational kinetic energy and rotational kinetic energy mutually transferred by sliding friction force, but it only has positive acting.
讨论滑动摩擦力作功，说明了滑动摩擦力可以使刚体的平动动能和转动动能之间相互转换，但总是作负功。
The paper focuses on whether muzzle kinetic energy could be a token and appraise essence factor of gun bear force and move in firing or not.
对炮口动能能否作为火炮后坐运动的表征量和火炮受力评价的本质因素进行了研究。
The results reflect the impacting force far less than the car impact to a rigid guardrail with same kinetic energy.
分析发现在缆索护栏与汽车的碰撞过程中其大小远小于相同能量的车辆对刚性护栏的碰撞力；
It transforms electromagnetic energy into mechanical energy (kinetic energy), driving load by electromagnetic force acting.
它把电磁能转换成机械能(动能)，借电磁力做功，传动载荷。
During the process of braking, the regenerative braking subsystem can store part of kinetic energy in the form of electrical energy in the battery, and generate braking force to brake the vehicle.
作为包括混合动力在内的电动汽车的再生制动子系统通过发电机，将制动过程中的部分动能以电能的形式存储到电池中，同时产生制动力对汽车进行制动。
It finds that there is a constant multiplied by frequency which is equal to the kinetic energy, when a charged particle does circular motion for the centripetal force product by the charge group.
发现带电粒子以电荷群的作用力为向心力做圆周运动时，有一常数乘以频率等于带电粒子的动能。
It finds that there is a constant multiplied by frequency which is equal to the kinetic energy, when a charged particle does circular motion for the centripetal force product by the charge group.
发现带电粒子以电荷群的作用力为向心力做圆周运动时，有一常数乘以频率等于带电粒子的动能。
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