The cylinder is run in pressure control (balancing operation).
2
当液压杆往上或往下移动而且无压住任何物体时压力表指针不会显示。
When the hydraulic pole move up or down and without compressing anything then the index of pressure meter without showing the pressure.
3
德国大众汽车工厂旁的停车塔中，液压杆正在将一辆银色的轿车放入停车位中。
A silver car is lifted up by a hydraulic lever to its parking space inside one of the glass car towers near the Volkswagen factory in Wolfsburg, Germany.
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