推左 meaning in English

truck-left

Take half a step forward with your right foot and shift your weight onto it . open your right hook hand and turn both palms up , elbows slightly bent , while you turn slightly to the right , raising the left heel . look ahead
身体继续右转，右手后摆，翻掌，抬左脚撤步推右掌，右脚转正，左手继续后摆翻掌，抬右脚撤步，推左掌，重心后移。
The paper depicts the elasticity with euler form and associates the form with depiction of behavior of fluid . the method takes the velocity as basic variables and then derives the left - deformation tensor from the velocity in order to deal with the time - independent motion . at last in this chapter the equations of the finite flow - element are set up from the principle of the virtual work
首先建立流管元的概念，对弹性固体相关的部分采用euler描写，并融入流体行为的描写中；以速度为变量，反推左变形张量，用于处理流固物质的定常运动，给出了控制方程和相应的变分式；以此为基础发展了一套相应的有限流管元算法。