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。
Power consumed in hydraulic system loss was nearly all converted into heat during operation.
液压系统工作时，系统损失消耗的功率几乎全部转化为热量。
The system uses the simplest axial-flow sleeve as flow control valve to blank off, isolate and select reservoir. The system adopts all-hydraulic operation.
本系统使用最简单的轴流类滑套作为流量控制阀，用以封堵、隔离和选择油层，并采用全液压方式进行动作控制。
This auto lift has breaking rope safety device, main safety location device and hydraulic lock, All these things guarantee safe and stable operation.
本机设有断绳保险机构和主保险定位机构及液压锁，保证使用安全，平衡可靠。
And the complicated system composed by PLC, all-digital driving controller, hydraulic valve and hydraulic tank is introduced to realize the complicated operation.
分析了可编程序控制器、全数字传动控制器、液压阀及液压缸互相结合成综合系统，完成复杂机械动作的特点。
All components and parts in the hydraulic pressure and electric control systems are identified clearly, even some of them with light instruction, which makes operation is very convenient.
液压系统和电控系统中所有元器件标识清楚，部分元器件还带有灯光指示，操作一目了然。
All components and parts in the hydraulic pressure and electric control systems are identified clearly, even some of them with light instruction, which makes operation is very convenient.
液压系统和电控系统中所有元器件标识清楚，部分元器件还带有灯光指示，操作一目了然。
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