proportional valve造句怎么写
- 造句
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The proportional valve can be opened sufficiently slowly to provide a smooth acceleration of the lift up to its maximum speed.
A proportional valve spool therefore has wider lands with notches cut into the edges.
As described earlier, the electrical current to the solenoid of a proportional valve needs to be regulated and not just simply switched on or off as is the case with a conventional valve.
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