... down pressure;向下压力 down spool movement;滑阀向下运动 down stroke;向下行程 ...
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up and down spool movement 滑阀的上下运动
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And likewise the deceleration can be controlled by slowing down the speed of spool movement back to the centre condition.
同样地,减加速度也能够被控制,使阀芯运动回中位的速度变慢。
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