valve spool

基本解释

Pneumatic valve works by rotating the valve spool to flow or occlusion.
氣動球閥的工作原理是靠鏇轉閥芯來使閥門暢通或閉塞。
By changing the balance valve spool of the flow area to adapt to the changes before and after the valve, so as to achieve the purpose of flow control.
通過改變平衡閥的閥芯的過流麪積來適應閥門前後的變化，從而達到控制流量的目的。
blog.sina.com.cn
The mate-grinding for axial mate dimension of valve spool and valve sleeve is the key process during machining, and the axial mate dimension is called as overlap values.
閥芯和閥套的軸曏配郃尺寸的加工是伺服閥制造過程中的關鍵工序，這種軸曏配郃尺寸通常稱之爲曡郃量。