brake valve spool 制动阀阀芯
selector valve spool 选择器阀滑阀
steering valve spool 转向阀柱塞
bowl valve spool 挖斗滑阀
summing valve spool 总阀柱塞
valve spool end 滑阀端
valve spool travel 滑阀行程
ejector valve spool 推卸器阀芯
shuttle valve spool 往复阀滑阀
Measuring valve spool with holes and gaps, valve hole diameter is 50?
测量阀孔和阀芯的配合间隙，阀孔直径为50 ？
Pneumatic valve works by rotating the valve spool to flow or occlusion.
气动球阀的工作原理是靠旋转阀芯来使阀门畅通或闭塞。
A proportional valve spool therefore has wider lands with notches cut into the edges.
比例阀阀芯具有比较宽的边缘带有槽口的台肩。
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