它由电念头、多级离心泵、底座、电缆和节制屏构成，个中电念头是该系统的要害部件。
The pump consists of prime motor, multi stage centrifugal pump, seat, wire and control, in which the key part is the prime motor.
它由电念头、多级离心泵、底座、电缆和节制屏构成，个中电念头是该系统的要害部件。
The pump consists of prime motor, multi stage centrifugal pump, seat, wire and control, in which the key part is the prime motor.
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