The sum of the kinetic and potential energy of the body is called its total mechanical energy . 物体的动能和势能之和称为物体的总机械能。
If only conservation forces act, the kinetic energy plus the potential energy remains constant . 如果只受保守力的作用，则动能加势能是一个恒量。
Wettability is the potential of a surface to interact with liquids with specified characteristics . 润湿性则是表面同特定性能的液体，相互作用的势能。
The available potential energy has been computed by reference to a statically stable reference state . 可用势能是以“静力稳定”参考状态为基准计算的。
zero potential energy would mean that the particle was always located at the origin, so that x would be zero. 零势能意味着粒子总是局限在原点上，所以x为零。
Hence, the loss of gravitational potential energy of the block equals the gain of elastic potential energy of the spring . 因此，该物块的重力势能的减少，等于该弹簧的弹性势能的增加。
Usually, we don't refer explicitly to the field but simply ascribe a certain amount of potential energy to the body itself . 通常，我们不明确地提到场，而仅说物体本身具有一定大小的势能。
It is by virtue of this fact that potential energy plays an important part in the construction of integrals of equations of motion . 正是由于这个式子，势能在构造运动方程的首次积分时将起重要作用。
He can obtain the force components by differentiating the potential and can often use the potential energy in an energy equation . 通过对势能求微商他可以得到力的分量，而且在能量方程中经常可以用势能。
To evaluate the potential energy we first observe that every positive ion is in a position equivalent to that of every other position ion . 为计算势能，我们首先要注意到，每一正离子所处的位置与另一正离子所处的位置完全相当。
