pump - speed too low” 泵速度低 检查水泵线缆接头接触，电源板 pump - speed low” 泵速度低 检查水泵、电源板 lens zoom position - requested target not reached” 镜头变焦无法达到指定位置 调整或更换镜头 ..
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The belt driven pump runs at low speed for an extended life.
皮带驱动的泵低速运行，以便延长寿命。
The experimental results and design theory for low-specific-speed centrifugal pump with splitter blades are detailed.
详细地综述了国内外长短叶片离心泵的试验研究、设计理论研究方面的成果及现状。
Especially the flow of compound impeller in the centrifugal pump at low specific speed is more complex and has more problems need urgently to resolve.
尤其是低比转速复合叶轮离心泵内部的流动更加复杂，亟待解决的问题也更多。
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