The core should be of such size that it can be moved up and down in the spool hole, yet will remain in any position.
核心应该是这样的规模，这是可以上下移动的阀芯孔，但将保留在任何位置。
They employ a unique, one piece center spool design that accommodates a user-supplied padlock in the closed position.
他们采用的是独特，一件中心轴设计，可容纳用户提供在关闭位置锁。
Mount the coil in a vertical position, on a hollow wood base so that a core can be moved up and down through the hole in the spool.
芒在一个垂直的位置上一空心线圈木材基地，使核心可移动通过在阀芯孔向上和向下。
The resulting differential pressure is applied to the ends of the spool valve, raising it from its spring-centered null position.
结果导致滑阀端部产生差压并将其自弹簧中心电气零位提升。？
The resulting differential pressure is applied to the ends of the spool valve, raising it from its spring-centered null position.
结果导致滑阀端部产生差压并将其自弹簧中心电气零位提升。？
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