The nominal head was presented for preliminary selection of hydraulic models, with consideration of the efficiency and reliability at all operation conditions.
为了兼顾各种特征扬程工况下的运行效率和可靠性，在水力模型初选阶段提出了选型名义扬程的概念。
Through the collecting of manufacturing data, the workshops' control on machinery has been strengthened and more things to monitoring the efficiency of nominal work hours have been done.
通过生产过程数据的采集，提高了制作部对生产设备运转状态的控制，丰富了制作部对操作人员制度工时利用率的控制手段。
Through the collecting of manufacturing data, the workshops' control on machinery has been strengthened and more things to monitoring the efficiency of nominal work hours have been done.
通过生产过程数据的采集，提高了制作部对生产设备运转状态的控制，丰富了制作部对操作人员制度工时利用率的控制手段。
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