Taking the transverse waves transmittes in solid substances for and example,the essay first expounds and proves the conservation of energy between any wave hand and the wave belly nest to it,between any wave band and any wave belly and between any 2corresponding positions and them,from the aspect of energy density,explains that the net amount of the energy flowing in and out doesn't vary wity time between any 2 corresponding positions in the whole elastic medium,thus concluding that there is no oriented travel of energy in standing waves.Besides,the essay discloses the process of energy transf...