通常，第一天得制定策略，比如怎样在积雪中驶过，车胎里的压力应为多少，使用怎样的传动装置等等。
Generally, the first day was all about choosing the tactics - how to move through the snow, what pressure should be in tires, what transmission should be used, etc.
每一组收缩都会对环绕在传动轴上的项圈产生压力，于是，这些搏动的肌肉会一齐连续地挤压传动轴，形成转动力，从而产生旋转。
As they do so, each pair applies pressure to a soft ring around the driveshaft. The pulsating muscles collectively and continuously pinch the shaft and apply a rotational force, causing it to turn.
控制元件：为满足传动性能的需要，在系统内为控制压力，流量和方向等而配置的各种阀件。
Control components: in order to meet the needs of transmission performance, in the system for the control of pressure, flow and direction of the configuration of various valves.
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