题目内容
In the hydraulic transmission system, in order to achieve the same reciprocating speed of the machine tool , a double rod piston hydraulic cylinder cab be used ( )
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Due to the pressure loss and leakage when the oil flows in the pipeline, the output power of the hydraulic pump is less than the power delivered to the hydraulic cylinder ( )
Connect the left and right chambers of the single-rod hydraulic cylinder and introduce pressure oil at the same time to make the piston move quickly ( )
Pressure and flowrate are the most important parameters in hydraulic transmission ( )
The compressed air used in the pneumatic transmission system must be dried and purified before it can be used ( )
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