shift unit meaning in English

移位器移相器
移位器装置

Summary on operation of shift unit of hualu - hengsheng large scale nitrogenous fertilizer
华鲁恒升大氮肥变换装置运行总结
This text design a expert intellience controller for electrical heater of co shift unit in a chemial . the author studies the method of control calulate , knowledge obtaining , process of production and development of dcs system
本文以某化工厂的变换工段的电加热器控制为对象，设计一个专家智能控制器，对控制算法、知识获取及dcs系统的开发进行了探讨和研究。