The basic positions they can take are straight position, free position, pike or tuck.

他们可以采用的基本姿势有:直体 、 任意姿势 、 屈体或抱膝.

The distance or angle that the executer unit passes since free position to action position.

操动器从自由位置移动到动作位置所经过的距离或角度.

The equilibrium stock price is determined by both the supply and the demand side, corresponding to the free position of a spring when all external force is removed.

股票的均衡价格是股票的买卖双方处于均衡态势时共同认可的价格，对应于弹簧在无外力作用时的平衡位置。