该装置用步进电动机带动分流板产生动态风。
The device creates dynamic air supply with stepper motor driving flow distribution plates.
该（旋转）环由电动机带动，其转速等于电动机的转速。
本产品用一台电动机带动叶轮同时增氧，提高养殖密度。
It increases oxygen simultaneously by using an electric motor to drive the impeller and raises the breeding density.
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