题目内容
Pressure and flowrate are the most important parameters in hydraulic transmission ( )
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The compressed air used in the pneumatic transmission system must be dried and purified before it can be used ( )
Pneumatic motor is a device that converts the pressure energy of compressed air into linear motion mechanical energy ( )
The pneumatic control directional valve can use the gas pressure to move the main spool and change the direction of the gas ( )
In the spool valve, hydraulic fluid acts as sealant to reduce leakage.
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