When mechanical energy density is variable with time in an object, the mechanical energy flow is bound to follow the transmission of mechanical energy.
物体中机械能密度随时间变化时，伴随着机械能的传递，将存在机械能流。
Following with mechanical energy transmission in medium, mechanical energy flow will be produced when the density of mechanical energy varies with time.
物体中机械能密度随时间变化时，伴随着机械能的传递，存在机械能流。
This paper introduces a new concept-mechanical energy flow, studies stress tensor in energy flow and an application of mechanical energy density conservative points in dynamical systems is discussed.
本文介绍了力学中的一个新概念机械能流，研究了能流中的应力张量，并讨论了动力学系统中机械能密度守恒点的一个应用。
It is impossible to have a cyclic machine that completely converts the random molecular energy of heat flow into the ordered motion of mechanical work.
不可能得到一种循环机器能把热流的无序的分子能量完全转变为机械功的有序运动。
The generator is a device that converts mechanical energy from the automobile engine into a flow of electric current.
发电机是把发动机产生的机械能转换为电能的装置。
This paper provides simple formulas to calculate the total mechanical energy and the total flow power, and to measure their methods.
给出了简便的计算总机械能及总流动功率的公式。给出了测定总机械能及总流动功率的方法。
During the flow we manage to change some of the heat into mechanical energy.
在流传中我们设法把部分热变成机械能。
During the flow we manage to change some of the heat into mechanical energy.
在流传中我们设法把部分热变成机械能。
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