动能

It is based on the dependence of temperature on the kinetic energy of the rapidly moving particles of a substance.

它的基础依赖于温度快速运动时物质微粒的动能。

Potential energy can be changed to kinetic energy.

潜在的能量可改变成动能

Except for a bit of energy lost to friction, the kinetic energy of the flying arrow is equal to the potential energy that was stored in the cocked crossbow.

除了一点能量是损耗在了摩擦中，飞翔的箭的动能与拉弓时储存的势能相等。

The effects of different parameters and cross-sections on axial velocity, the distribution of secondary flow, temperature field, turbulent kinetic energy, wall friction coefficient and wall Nusselt number are analyzed in detail.

详细分析了充分发展的和发展段的湍流管道内，不同截面形状和几何参数对轴向速度分布，截面二次流结构，湍动能，曲线管道摩擦比，温度分布和曲线管道Nusselt系数比等管道流动和传热特性的影响。

If they have the opportunity to Earth nearby, it is possible to the speed of tens of kilometers per second into the Earth's atmosphere, the material above the Earth's atmosphere due to massive friction, kinetic energy into a tremendous heat, caused material ionization issued dazzling rays of light.

如果它们有机会经过地球附近，就有可能以每秒几十公里的速度闯入地球大气层，其上面的物质由于与地球大气发生剧烈摩擦，巨大的动能转化为热能，引起物质电离发出耀眼的光芒。

The influence of inlet turbulence intensity on the velocity, temperature, turbulence kinetic, friction coefficient and Nusselt number is limited on a limited region which is smaller than 30d.

5旋转螺旋管道内的入口湍流强度对流动和温度场结构、湍动能、摩擦系数以及Nusselt数的影响都局限在距离入口端不超过30倍管道直径的有限长度内。

In the inlet turbulence intensity influenced region, the larger the inlet turbulence intensity is, the larger the turbulence kinetic, friction coefficient and Nusselt number is.

在入口湍流强度的影响范围内，入口湍流强度越大，湍动能、摩擦系数以及Nusselt数越大。

In many example of mechanical motion,there is an interchange between kinetic and potential energies.

在很多机械运动的实例中，有一种是动能和势能之间的相互转化。

We now equate this work to the total change in energy, kinetic and potential, of the element

现在我们使这个功等于流体无动能和热能的总能量的改变。

There exist many sources of energy both potential and kinetic.

存在着许多势能和动能的能源。2。生存，活下来，幸存

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。