mechanical energy flow

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。