The structure consists of the electrohydraulic servo and a rotary blade type steering engine device;
其结构由电液伺服器和转叶式舵机装置所组 成；
The device of the utility model relates to a rotary blade type vacuum pump. The structure comprises a pump, an electrical machine and a rotor.
本装置涉及一种旋片式真空泵，其结构由泵、电机及转子组成。
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