Right In the fluid control and shut down and so on, spool orientation is important for the spool valve core and valve.
对于流体的控制和关闭等，阀芯的导向十分重要，阀芯导向用于阀芯和阀座的对中配合。
Right In the fluid control and shut down and so on, spool orientation is important for the spool valve core and valve seat oriented toward the tie.
对于流体的控制和关闭等，阀芯的导向十分重要，阀芯导向用于阀芯和阀座的对中配合。
A toy consisting of a flattened spool wound with string that is spun down from and reeled up to the hand by motions of the wrist.
游游拉线盘， 溜溜球由缠有细绳的扁线盘构成的玩具，通过手腕运动在手上翻转，然后收到手里。
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。
And likewise the deceleration can be controlled by slowing down the speed of spool movement back to the centre condition.
同样地，减加速度也能够被控制，使阀芯运动回中位的速度变慢。
And likewise the deceleration can be controlled by slowing down the speed of spool movement back to the centre condition.
同样地，减加速度也能够被控制，使阀芯运动回中位的速度变慢。
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