可以控制油液流如液压缸的其中一端，在活塞杆上产生一个拉力或产生一个推力。
Flow into the cylinder can be directed to either end, producing either a pushing or pulling force at the piston rod end.
可以控制油液流如液压缸的其中一端，在活塞杆上产生一个拉力或产生一个推力。
Flow into the cylinder can be directed to either end, producing either a pushing or pulling force at the piston rod end.
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