Counter-rotation of dual-brush disc, highpressure which can stubborn stains on the ground.
双刷盘相互旋转,高强压力,可清洗顽渍地面。
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The counter-rotating turbine design has been successfully applied in E3 program by P&W Company. The design characteristics of the high-pressure turbine stage was analyzed and discussed in this paper.
The way that counter rotating local fan with the characteristics of high efficency, low noise, high pressure and large flow rate is not practical is put forward.