缓冲速度的快慢由缓冲阀孔的通径决定。
The buffering speed is controlled by the latus rectum of the buffering valve hole.
金属弹性封片将卸压阀卡压在卸压阀孔内。
The metal elastic sealing sheet presses the pressure relief valve inside the pressure relief valve hole.
测量阀孔和阀芯的配合间隙,阀孔直径为50 ?
Measuring valve spool with holes and gaps, valve hole diameter is 50?
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